Using SOH (Sin=Opposite/Hypotenuse) Opposite of 20 degrees is the side labeled x. 8 is the hypotenuse. Sin(20)=x/8 Put Sin(20) into a calculator. (You should get 0.3420) Start with 0.3420 = x/8 Then swap sides x/8 = 0.3420 Multiply both sides by 8 x = 0.3420 x 8 x = 2.736 Your answer would be sin20 times 8
