prove sinA*cos2A=1/4sin4A*secA
Answer:
The prove is below
Explanation:
From trigonometric identities:
[tex]cos2A=cos(A+A)=cos^2A-sin^2A\\sin2A=sin(A+A)=2sinAcosA\\sin4A=sin(2A+2A)=2sin2Acos2A=2(2sinAcosA)(cos^2A-sin^2A)=4sinAcos^3A-4cosAsin^3A\\secA=\frac{1}{cosA}[/tex]
Therefore:
[tex]\frac{1}{4}sin4AsecA = \frac{1}{4}( 4sinAcos^3A-4cosAsin^3A)\frac{1}{cosA}\\= sinAcos^3A-cosAsin^3A(\frac{1}{cosA} )\\=sinAcos^2-sin^3A\\=sinA(cos^2A-sin^2A)\\But\ cos^2A-sin^2A=cos2A\\Therefore:sinA(cos^2A-sin^2A)=sinAcos2A\\\frac{1}{4}sin^4Acos2A=sinAcos2A[/tex]
Charlotte and James have three young children. Charlotte's parents are originally from France and her husband James is from Nigeria. Charlotte and James have many things in common, but they tend to differ in their views on how to bring up their children. James's mother also thinks that the children do not know enough about their father's culture. What can Charlotte and James do to strengthen their family? Charlotte and James should tell their children stories related to both their cultures. They should only consider one parent's views when making family decisions. They should allow their children to hear their arguments and disagreements.When James's mother visits them, they should not allow her to spend too much time with the children.
Answer:
Based on what you are providing here, it would be Charlotte and James should tell their children stories related to both their cultures.
Explanation: With only allowing one parent's perspective, the other parent's culture is being excluded. Additionally, allowing the children to witness arguments over such discussion is not necessary, and lastly, not letting the grandma spend time with the children is not beneficial.
I hope this give clear understanding to your question. :)
Risks for chronic disease can be reduced by participating in moderate physical activity for a minimum of ______. A. 20 minutes a day, every day of the week B. 30 minutes a day, every day of the week C. 20 minutes a day, two days out of the week D. 30 minutes a day, most days of the week Please select the best answer from the choices provided. A B C D
Answer:
C. 20 minutes a day, two days of the week.
Explanation:
This is the correct answer on Edge. A B and D are wrong.
why do boys hold in there feelings when there around a girl they like
Answer:
simple
Explanation:
when we do that, it's cuz we're not sure if the girl feels the same way and we fear that she doesn't feel the same way. Not wanting to ruin a friendship is also another reason. but not all dudes are like that, the ones that aren't like that, are most probably the ones that are ALWAYS getting at girls so they've lost that fear
Answer:
Because maybe the boy may not like the girl, or the opposite
Explanation:
which of these is associated with bulimia nervosa
Answer: The risks associated with bulimia nervosa are severe and may include: Chronic sore throat, indigestion, heartburn and reflux. Inflammation and rupture of the oesophagus and stomach from frequent vomiting. Stomach and intestinal ulcers.
Explanation: I took a health class test.
Answer:
Bingeing and purging
Explanation:
Which phrase accurately describes total body fat? Select three options. nonessential forms of fat in the body essential fat needed for normal body functioning a type of fat also known as storage fat a fat used to determine total body mass a fat that helps calculate relative total body composition
Answer:
essential fat needed for normal body functioning
a type of fat also known as storage fat
a fat that helps calculate relative total body composition
Explanation:
Fat is an essential part of the body system and is gotten from food sources rich in fatty acids and tryglycerides.It is formed when excess energy in the body or fat obtained from the food are digested. These fats are located under the skin in the form of adipose tissues and they help in the normal body functioning. These fats can be converted back to energy during stress or starvation periods. It also helps in the calculation of the total body composition by calculation of the body mass index which is the weight divided by the square of the height.
Answer:
B C and E
Explanation:
got it right
Sophia is 15. At 5'5" tall and 115 pounds, she looks in the mirror and sees a fat person. At dinner, she tells her parents, "I'm not hungry – I'll eat later." But Sophia doesn't eat later because she has begun to starve herself in secret. For the past week, she's been eating about 400 calories a day. Possible signs of Sophia's eating disorder that other people might notice: Health consequences Sophia might face: How I might be able to help Sophia:
Answer:
Sophia is suffering from anorexia or anorexia nervousa People might notice the weight loss, getting dangerously skinny, and constant fatigue. The health consequences are she can become extremely sick, do permanent damage to her body, or even die.
You might be able to help sophia by Choosing a time where you won't be interrupted, explain why you are worried about them in a calm manner, prepare yourself for a negative reaction.
Sorry, this is long but hopefully this helps! Brainliest would be appreciated!
The eating disorder in which a person starves and deprive of nutrition is known as anorexia.
Anorexia is an eating disorder, which is exhibited by Sophia. The people starving can experience weight loss, get dangerously skinny, the body's BMI falls and can be fatigued.
The starving results in limiting the nutrition and calories, which may result in severe health problems. The problems that Sophia can face are fatigue, experiencing diseases, sleeping problems, and stress.
The person can get help from a professional or a nutritionist to plan a systematic weight loss journey. The person should have enough knowledge on nutrition and should not starve to reduce the weight.
Thus, eating disorders can result in serious health problems.
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CARE-PE 2 A
What does the term body composition refer to?
20. How did Milo of Crotona progressively increase his workload?
Answer: Milo of Crotona progressively increased his workload by starting at lifting a baby calf and keeping on lifting the calf as it grew bigger.
PLEASE ASAP
With infant CPR you should...
A do 30 compressions using one hand at 2" deep.
B give 5 back blows and 5 chest compressions then repeat.
C give 2 breaths and compressions at 120-140 beats per minute.
D use 2 finger compressions at 100-120 beats
per
minute.
Answer:
D - use 2 finger compressions at 100 - 120 bpm
Drugs cause almost
the release of dopamine
twice
three-five times
twice to ten times
fives times
ten times
Answer: twice to ten times
Explanation:
"Drugs cause almost twice to ten times the release of dopamine from this pathway, and can occur almost immediately and last longer than the dopamine released from “survival activities”"
The correct answer is option C.twice to ten times.
Do drugs cause the brain to release dopamine?Drugs cause almost two to ten times the release of dopamine from this pathway, occurs almost immediately and can last longer than the dopamine released by survival activity'.
Although found in the brain, all addictive substances, including alcohol, opioids, and cocaine, cause a pleasing surge in the neurotransmitter dopamine in a region of the brain called the basal ganglia.
Neurotransmitters are chemicals that carry messages between nerve cells and are primarily involved in helping to feel joy as part of the brain's reward system. Sexual contact, shopping, and the smell of oven-baked cookies. Sniff-All of this can cause a release of dopamine or a "dopamine rush." "'Trigger on amplification.
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What is another name for the process by which glucose is broken down by the human body
Glucose is broken down by the body in cellular respiration which produces, water, carbon dioxide as well as energy in the form of ATP and heat.
Glucose can also be converted to glycogen for storage in the liver
Which actions are examples of unsafe exercise behavior? Check all that apply.
hurting your ankle while jogging, but deciding to continue running
paying careful attention to instructions before using new equipment
taking time to warm up before beginning exercise
using fitness supplements and energy bars without paying attention to the nutrition information
exercising outside during warm weather without paying attention to drinking enough water
Answer:
A,D, and E
Explanation:
The actions which are examples of unsafe exercise behavior are:
Hurting your ankle while jogging, but deciding to continue running.Using fitness supplements and energy bars without paying attention to the nutrition information.Exercising outside during warm weather without paying attention to drinking enough water.How to do safe exercise?Make use of the right tools.Develop a well-balanced fitness regimen that includes cardio, strength training, and flexibility.Even before stretching, warm up to prepare for workout.With each repetition of strength training, go through the entire range of motion. Regular breathing can help decrease blood pressure and enhance blood flow to the brain.To avoid dehydration, heat exhaustion, and heat stroke, drink plenty of water.Cooling down should be the last element of your workout.Schedule regular relaxation days and rest when you're tired.Thus, options A,D, and E are examples of unsafe exercise behavior.
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A short-term effect of anorexia might include weight loss.
O A. True
O B. False
Answer:
true!
Explanation:
not always, anorexia isnt an external illness, but its very common.
You want to cook a healthy meal for your family. While shopping for food, you remember that it is important to read the food labels and dates to help you make an informed choice.
Which statement best describes the "use by” date shown on food products?
This date indicates when a product will be of best flavor or quality.
This date tells the store how long to display the product for sale.
This is the last date recommended for use of the product.
This is the date that guarantees safety of the food item.
Answer:
This is the last date recommended for the use of the packet. Its common terminology is EXPIRY DATE
Explanation:
hope this helps you out!
Answer:
its c
Explanation:
Match each endocrine structure with the appropriate category.
Present in males
only
?.
Pituitary gland
Present in
females only
?
Ovary
Master gland
?
Testicle
Answer:
Master gland-Pituitary Gland
Present in females only-Ovary
Present in males only- Testicle
Explanation:
a p e x
Endocrine structures are composed of glands. Testicles are present in males, the pituitary is the master gland, and the ovary is present in females, are some examples. Thus, the correct matches are 1. c, 2. b, and 3. a.
What are endocrine structures?Endocrine structures are the glandular organs that produce and secrete hormones to various and specific organs. The pituitary gland is the master gland that secretes a number of hormones that regulates the growth, organs, and other glands.
The ovary is the structure present in the female uterus that secretes progesterone and estrogen to balance fertility and reproductive development. Whereas, the testicles are the male reproductive organs that secrete testosterone essential for sperm production.
Therefore, the endocrine structure has glands to secrete the hormones.
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Which statement about these two restaurant meals is correct?
Moal A
Meal B
A. Meal A is the more healthful choice.
ОО
B. Neither meal contains any nutrients.
C. Meal B is the more healthful choice.
D. Both meals are healthful choices.
Answer:
D both meals are healthful choices
Explanation:
Hope this helps
Correct me if this is wrong
Create a plan to maintain good personal hygiene
(including oral hygiene), and explain how you would
execute it.
Answer:
Take a shower every day
Brush your teeth every day
Put deodorant on every day
Explanation:
I will do this by making these things be the first things I do in the morning and before I go to sleep
Answer:
To maintain good personal hygiene, I would need to brush my teeth after every meal and floss at least once a day. I would need to shower regularly, especially after exercise. To protect my hearing, I should avoid loud noises or use hearing protection. To avoid getting sick, I should be careful to wash my hands regularly, especially after using the restroom and before preparing foods.
Explanation:
edg 2020
Jim is a long-distance runner. After one of his workouts, drenched in sweat, he headed back to his house to eat lunch. After lunch he noticed that he was completely dry. Which of the following terms explains the part of the water cycle that Jim experienced between the end of his run and after lunch?
A. evaporation
B. precipitation
C. condensation
D. decomposition
Answer:
Evaporation
Explanation:
He was wet and condensation would be his way of cooling by which he sweat. He isn’t decomposition- that’s not part of the water cycle. And we are saying that he dried so evaporation.
Evaporation is the part of the water cycle that Jim experienced between the end of his run and lunch.
What is the water cycle?It is the movement of water from the earth back to the earth through the atmosphere.
What is evaporation?It is the conversion of state from liquid to gas. it can happen at any temperature.
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Magali's doctor tells her the decongestant she has been taking for her cold has affected her blood pressure. What explains the relationship between this type of medicine and hypertension?
Answer:
This is because of the constricting effects on the blood vessels of the head region( and the entire body blood vessels);that is these medicines narrow blood vessels (the arteries and capillaries).This is because their mechanisms of action, in an attempt to decongest the nose,involved reduction in the diameter of the blood vessels, of so that blood supply is reduced, and this also reduces swelling of the nose,
However, the narrowing of the blood vessels raises the blood pressure because of the vascular resistant to the blood flow, increasing blood pressure.
Explanation:
Answer:
A decongestant causes blood vessels to narrow, increasing blood pressure.
Explanation:
edge 2021 biology test
Place the following events in sequence: A) Energy is released into the body B) Glucose enters the mitochondria; C) Carbon dioxide and water are produced
What would happen if our bodies could not metabolize glucose?
Answer:
So the sequence is:
CO2 and water are producedGlucose enters mitochondriaEnergy is released into the bodyIf our bodies could not metabolize glucose then we would be prone to diabetes and lifestyle diseases
Explanation:
Hope this helps! Have a good night ahead.If our bodies could not metabolize glucose then; we would be prone to diabetes and lifestyle diseases.
What is Mitochondria?Mitochondria is considered the powerhouse of the cell, for being the organelle where most of the energy is produced in the form of adenosine triphosphate (ATP).
Energy is produced by cellular respiration, the pathway at which glucose is breakdown using oxygen and releasing energy (ATP) and carbon dioxide.
The following events in sequence:
Carbon dioxide, CO2 and water are produced
Glucose enters mitochondria
Energy is released into the body
WE know that if our bodies could not metabolize glucose then; we would be prone to diabetes and lifestyle diseases.
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According to this graph, what statement summarizes
the causes of death in the United States for 2014?
Cancer accounts for fewer deaths than diabetes.
ase
Diabetes accounts for fewer deaths than the flu and
pneumonia.
Non-communicable diseases account for more than
half of the deaths.
Non-communicable diseases account for fewer
deaths than accidents.
onio
Answer:
The answer is c.
Explanation:
More than two-thirds (71%, or about 41 million) of all annual fatalities are caused by NCDs, which are also among the top causes of illnesses that can be prevented and disabilities that are associated. Thus, option C is correct.
What are the causes of Non-communicable diseases?Noncommunicable diseases (NCDs), which include heart disease, cancer, chronic respiratory conditions, and diabetes, are the world's biggest killers and a growing threat to global health.
The four main risk factors for NCDs are cigarette use, physical inactivity, alcohol abuse, and poor diet. The NCD epidemic has catastrophic health repercussions on individuals, families, and communities and poses a threat to overtax healthcare systems.
Therefore, More people now die from NCDs than from all other communicable diseases put together.
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How might a person’s lifestyle (career, financial situation, family members) impact their diet and nutrition? Please explain and give some examples.
If someone has a low paying job and a family, they would much rather be able to feed their whole family and just get food in their stomachs then to have the right nutritional value. But if someone has a higher paying job, they can afford varieties of different types of food.
Approximately what percentage of American adults are considered obese? a. 13.2% b.33.4% c.66% d.88.3%
Answer:
66%
Explanation:
name a commonly underconsumed nutrient. then describe a longterm consequence of poor diet
for this activity you need a plain or salty cracker or bread (nothing sweet) place a piece of cracker in your mouth with out swallowing for 1 minute what do you notice about the flavor of the cracker did the flavor change why does it taste sweet
Answer:
Salivary amylase chemically breaks down the starch from the cracker into simple sugars maltose and glucose. This is why the cracker became sweeter.
Maltose and glucose are formed chemically from the starch in the cracker by salivary amylase. The cracker got sweeter because of this.
What is the role of taste buds in flavoring?One of the five senses that humans have is taste. Because it lets the individual select the proper diet, which is needed for one's existence, maintenance, and function, it is crucial to our ability to survive.
Being omnivorous and foraging creatures, taste aids us in locating wholesome foods in a challenging environment.
Dish flavors are created by the interaction of various tastes inside meals with one another and with other sensory input. This interaction helps us decide whether to eat food based on its overall profile.
Taste, somatosensation, and olfaction are three separate senses that work together to create flavor.
Therefore, Contrary to this scientific explanation, most individuals don't seem to be aware that olfaction contributes to the experience of flavor.
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What does "genetic potential" have to do with muscular strength?
Answer:
it is your overall potential
Explanation:
so its not only your mussul potential but all your potential, it has to do with mussule because mussel is a part of your general potential but it is not all of it.
Which of the following is the most preventable cause of disease and death in the U.S.?
smoking,high blood pressure and being overweight
Explanation:
this is because smoking leads to lung cancer which can kill you ,high blood pressure because if you are stressed so much you blood pressure will rise and can cause heart attack ,overweight can the heart to stop pumping blood due to too much fat and can cause heart attack which can end up killing you
PLEASEEE just check out what I have to say !!!
I already posted a ‘question’ but no one answer :’) —- anyways PLEASE READ!
Background info:
WHEN I WAS YOUNGER I had asthma not for too long,though I did use an inhaler but since it ‘stopped’ quickly I rarely have memories of using it, fast forward couple years I suddenly get more tired from running , ok , I am a lazy person so guess i just was no longer used to running that often didn’t think much of it though I did think “maybe my asthma is back” I was breathing fine just got tired more so didn’t think much of it, couple more years now I noticed my chest feels a bit tight again didn’t think much of it till I guess today? I went back to thinking “MAYBE MY ASTHMA IS BACK”
**worried a bit more due to this pandemic but I can assure you I am not sick in that way!** I googled but I am not sure since I for sure don’t want to self diagnose myself but I did notice a few things that were said that matched up with how I am feeling
I need advice! sorry for all that I just wanted to put out background information
Answer:
maybe you should get another inhaler, that might help
Answer:
u have a very light asthma, asthma can not "go away" . if u have it, u have it forever. u still have asthma, so if you feel a tightness in your chest you should use your inhaler, but ONLY if you feel the tightness and/ or symptoms of asthma because useing the inhaler without feeling and pain wont benifit you and it will be a waste of money.
Explanation: How do reliever inhalers help asthma? When you have an asthma attack your blue reliever inhaler gets the medicine straight to your lungs, so it can quickly relax the muscles surrounding your airways. The airways can then open more widely, making it easier to breathe again.
HOPE IT HELPS!!
You are looking for a new tennis partner. Which of these people would most likely demonstrate good sportsmanship based on the information provided?
Answer:
You forgot to attach an image
Explanation: