MATHEMATICS MIDDLE SCHOOL

Marco wrote the equation below. Cos ( -π /2) = cos ( 3π / 2)

Which statement best describes Marcos equation?
Marco wrote the equation below. Cos ( -π /2) = - 1

Answers

Answer 1
Answer:

Answer:

It is true, because the cosine function has a period of 2π


Step-by-step explanation:

Since, the period of the cos function is 360° ( or 2π radians ), it holds the property of:

Cos(\theta)=Cos(2\pi +\theta)


Taking \theta as -(\pi)/(2), (2\pi + \theta) is equal to  2\pi + (-(\pi)/(2))\n=2\pi - (\pi)/(2)\n=(4\pi-\pi)/(2)\n=(3\pi)/(2)

The equation is true!

Note: The cos function is even function


Hence, the equation is true, because the cosine function has a period of 2π, NOT because the cosine function is ODD, which it is not!!

Related Questions

A certain bleach is 5% active ingredients. In 10 gallons of this bleach, how much is active ingredients? 0.05gallons 0.5gallons 5gallons
Tabitha is raising rabbits to sell during the spring she has 16 rabbits and feeds them each one half cup of carrots every morning the bag of carrots She bought completely filled a five gallon plastic barrel how many days will it last
What is 14.9 round to?
Answer the questions below based on a bag of Jolly Ranchers having the following number of each flavor:23 grape32 blue raspberry28 cherry19 apple​20 watermelon​Part AWhat is the probability of reaching into the bag and choosing a grape flavored Jolly Rancher? (Fraction form only)Part BWhat is the probability of reaching into the bag and choosing a watermelon flavored Jolly Rancher? (fraction form only)Part CWhat is the probability of reaching into the bag and choosing a grape or watermelon flavored Jolly Rancher? (fraction form only)Part D​What is the probability of reaching into the bag and not choosing a grape or watermelon flavored Jolly Rancher? (fraction form only)Use / for fraction bar if necessaryFirst ones to answer all gets brainiest uwu
Karyn proofreads 15 pages in 2 hours for $40a. How much does she receive on average for a page?

Concrete is a mixture of cement, sand, and gravel. The Masons will purchase a cement, sand, and gravel mixture in a ratio of 1:2:3. How many pounds of each material are needed for 60 lb of concrete mix?

Answers

10 pounds of cement, 20 pounds of sand, 30 pounds of gravel. 10:20:30 = 1:2:3
10 + 20 + 30 = 60

A jar contains jelly beans that are red, yellow, blue, and purple. Several people reach in and grab handfuls of jelly beans, then collectively tally the number of each color: 15 red, 20 yellow, 12 blue, and 8 purple. If someone pulls out 22 jelly beans, about how many would you expect to be yellow?

Answers

1) calculate percentage of yellow jelly beans from original capture
20 / (15+20+12+8) = 4/11 or 36.364%
2) apply percentage to new amount
4/11 *22 = 8 beans

Answer:

the answer is 8.

trust me

Find the final price on a $1,049 televisionthat is on sale for 12% off of the sales tax is
4.5%

Answers

Answer:

$883.40

Step-by-step explanation:

Calculate the amount of money needed to pay after the discount.n

$1049 × 88% = $923.12

Calculate the amount of money needed to pay after the tax.

$923.12 × 104.5% = $883.3684210526

=$883.40(rounded off to nearest cents)

hope  this helps

At an electronics store the price of a tablet is marked down 15% to 212.50

Answers

Answer:

the correct answer is $250

step-by-step explanation:

i put what the first person said and i got it wrong, and when i looked at the review it said the correct answer was $250.00

X - Y= 10
5x+y= 6
Solve the system of equations graphically

Answers

The graph would look like this

What is 248 divided by 112?can someonr PLEASE HELP ME!!!!!

Answers

The answer is 2.2142857143 but you can round it to 2.
Seriously. Ever heard of a calculator? It's 2.2142857142857143
Other Questions
Which answer choice contains only equations?A.2+h=14 and k-25=2 B.c-14 and d+134 C.10=3+s and 22-y D.15+x and 55=r-1
800g : 2kgpls tell me
I^37 is what?A: iB: -iC: 1D: -2
PLS ANSWER True or false?