Question

Given triangle ABC, which equation could be used to find the measure of angle C?

Answer 1

Okay, it's very simple, to solve this triangle you need to understand what the other angles are. We know that angle A is 90º, as it is represented as a square.

We now need to solve for angle B. angle B can be solved for by

Sin (x) = Opposite / Hypotenuse = 3 / 3√5 = 2.24ish
sin(x) = 2.24

x = $sin^{-1}$(2.24)

Use sin.