Question

There is a clown's face on the top of a spinner. the tip of his hat rotates to (−2, 5) during one spin. what is the cosine value of this function?

Answer 1

Hi friend !!

Here's your answer !!

Refer to the image for clear understanding.

Here in the right triangle, It is given that opposite side is ( 5 ) units and the adjacent side is ( - 2 ) units.

So Applying Pythagoras Theorem, we get,

( - 2 )² + ( 5 )² = Hypotenuse²

=> Hypotenuse = √ ( 4 + 25 ) = √ 29 units.

Also we know that Cos Ф = Adjacent / Hypotenuse

Hence Cos Ф = ( - 2 ) / √ 29

Hope my answer helps !!

Cheers !!

Answer 2

Answer: that's correct but sometimes you change it to -2✓29/29

:) Have a wonderful day