Multiply and use fundamental identities to simplify

The video tutorial explains how to multiply two trigonometric binomials and simplify the result using trigonometric identities. It begins by introducing the concept of multiplying binomials and recognizing the difference of two squares. The tutorial then demonstrates how to simplify the expression using trigonometric identities, specifically focusing on the Pythagorean identities. The final result is a simplified expression, and the tutorial concludes with a brief summary of the process.

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