Multiply and use fundamental identities to simplify

The video tutorial explains how to simplify a trigonometric expression involving sine and cosine squared terms. It begins with a review of squaring and binomial expansion, followed by a step-by-step simplification process using multiplication techniques and Pythagorean identities. The tutorial concludes by demonstrating how the expression simplifies to a final result of 1.

Discuss the importance of understanding binomial squares in trigonometric simplifications.

Describe the process of combining like terms in the final expression.

What is the final simplified result of the expression discussed in the video?