Multiplying and using reciprocal identities to verify an identity

The video tutorial explains how to verify a trigonometric identity by simplifying both sides of the equation. The instructor starts by choosing a side to simplify, applies the FOIL method to expand binomials, and then uses trigonometric identities to simplify the expression further. The process involves rewriting terms in terms of sine and cosine, and using identities to reduce the expression to the desired form. The tutorial emphasizes understanding each step and correcting mistakes to ensure the identity is verified correctly.

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