Respuesta :

Answer:

37.9°

Step-by-step 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°