Evaluating the sum and difference for Secant

The video tutorial explains how to solve a problem involving triangles in Quadrant 2. It covers the use of Pythagorean triples and the Pythagorean theorem to find missing sides of a triangle. The tutorial also demonstrates how to evaluate the secant function by using the reciprocal of cosine and simplifies trigonometric expressions to arrive at the final answer.

How do you evaluate secant in relation to cosine?

Describe the process of simplifying the expression involving cosine and sine values.