Question

If sin 0 = 4
what is cos O?
cos 0 =
=
Simplify your answer if possible.

Answer 1

cos(θ) = (√33)/7

Explanation:

The relevant relation is ...

cos(θ) = √(1 -sin²(θ))

cos(θ) = √(1 -(4/7)²) = √(1 -16/49) = √(33/49)

cos(θ) = (√33)/7