3 years ago

If sinA÷2 =4÷2 find the value of cosA (not by pythagoras theorem)

Mathematics

1 answer:

Grace [21]3 years ago

6 0

Answer:

Step-by-step explanation:

Sin A ÷ 2 = 2

Sin A = 2×2

Sin A = 4

Cos A = sqrt (1 - Sin ^2 A) = sqrt(1 - 4^2)

Cos A = sqrt(1-16) = sqrt (-15) = sqrt(15i^2)

Cos A = i sqrt(15)

You might be interested in

A clothing company produced 600 items of clothing. Of those, 15% were jackets, 25% were dresses, and 15% were shoes. How many of

Volgvan

Answer:

270 items

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is 28196−−−√ written in simplified radical form?

kirill [66]

Answer:

167.9166459

Step-by-step explanation:

6 0

3 years ago

An equation is modeled. What value of x makes the equation true? Explain.

nirvana33 [79]

Answer:

B: x=-1

Step-by-step explanation:

5x+6=1

5x+6-6=1-6

simplify

divide by 5 on both sides

x=-1

4 0

3 years ago

Please help me answer these questions if you give an answer you are a lifesaver

il63 [147K]

On Part A you have to subtract $2.39-$1.99. Then in Part B you have to multiply $4.50 by 2. And then I think you have to add $3.79 when u are done multiplying.

4 0

3 years ago

PLEASE HELP ASAP!!!!!

dedylja [7]

I think there are 44 sunflowers, hope it helps ya

6 0

3 years ago

If sinA÷2 =4÷2 find the value of cosA (not by pythagoras theorem)​

If sinA÷2 =4÷2 find the value of cosA (not by pythagoras theorem)