Question

IT'S DUE TODAY please some1 help me on this one.

In ΔQRS, s = 5.2 inches, ∠S=129° and ∠Q=30°. Find the length of r, to the nearest 10th of an inch.

Answer 1

Q+R+S=180

30°+R+129°=180

R=180-159

R=21..

is the answer