Question

In RST, the measure of T=90°, RT=16, SR=65, and TS= 63. What is the value of

the cosine of S to the nearest hundredth?

Answer 1

Answer: 0.97

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(S) = TS/SR

cos(S) = 63/65

cos(S) = 0.969231

cos(S) = 0.97

Each decimal value is approximate. See the diagram below.