Question

What is the value of X? Enter your answer as a decimal in the box. Round only your final answer to the nearest 10th.

Answer 1

Use the Law of Sines to find side x. 
x / sin(A) = c / sin(C) 
x / sin(61°) = 15 / sin(81°) 
x = (sin(61°) x 15) / sin(81°) 
x = 13.283
Or rounded to 13.3