Question

What is the sum of x and y?
45
90
135
180

Answer 1

Remember SOH CAH TOA

SOH - Sin = opposite/hypotenuse
CAH- Cosine = Adjacent/hyptoenuse
TOA - Tangent = Opposite/Adjacent

To find x, your going to use opposite over adjacent.
So: Tan-1 (21/20) = 45

To find y, your going to use opposite over adjacent again
So Tan-1(20/21) = 46.4

Hope this helped (:

Answer 2

i got it :)