Question

A right triangle has side lengths 9, 40, and 41 as shown below.

Use these lengths to find cosX, sinX, and tan X.

Answer 1

cos(X) = 40/41, sin(X) = 9/41, tan(X) = 9/40

Explanation:

Know the acronym SOHCAHTOA: Sine is the Opposite side divided by the Hypotenuse, Cosine is the Adjacent side divided by the Hypotenuse, and Tangent is the Opposite side divided by the Adjacent side.