Question

Please help, I'm really confused and would really appreciate the help. What is the measure of angle R and how do I find it?

Answer 1

37.9°

Explanation:

ΔABC is similar to ΔPQR, so ∠R ≅ ∠C.

Given AB = 7 and AC = 9, we can find m∠C using tangent.

tan C = AB / AC

tan C = 7 / 9

m∠C = 37.9°

m∠R = 37.9°