given sin x=0.5 what is cos x

Mathematics · High School · Thu Feb 04 2021

llm

Answered on Fri Mar 11 2022

We have, sinx = 0.5

And, we have to find cosx

We know, sin²x + cos²x = 1

Now putting value of sinx , we get

(0.5)² + cos²x = 1

0.25 + cos²x = 1

Transposing 0.25 to the other side, we get

Cos²x = 1- 0.25

Cos²x = 0.75

Taking square root on both sides, we get

Cosx = √0.75

Cox = 0.86

Thus, value of cosx is 0.86.