Question

I need help with this ion understand it

Answer 1

c. 30

Explanation:

Reference angle =
`/theta` = ?

Hypotenuse = 23

Adjacent side = 20

Thus, applying CAH:

`Cos(/theta) = (adj)/(hyp)`

`Cos(/theta) = (20)/(23)`

`/theta = cos^(-1)((20)/(23))`

`/theta = 29.5918458` ≈ 30° (nearest degree)