What is the measure of ∠R to the nearest degree?
31°
53°
58°
80°
Using the Law of Sines
sin 69 / 35 = sin R / 30 multiply both sides by 30
(30/35)sin69 = sin R
(6/7) sin 69 = sin R
Use the sine inverse to find R
arcsin [ (6/7) sin 69 ] = R = 53°
