Use the sine function to find length c of a standard right triangle ABC given a = 13 cm and A = 73.4°. Round to four significant digits.
A)12.46 cm
B)45.50 cm
C)13.57 cm
D)3.714 cm

Question

Quizplus · Accepted Answer

We know that sin A = opposite/hypotenuse. 
Rearranging it we get,  hypotenuse = opposite/sin A. 
So, c = a/sin A = 13/sin 73.4° = 13.57 cm (rounded to four significant digits).

Use the Sine Function to Find Length C of a Standard