Most students overlook this to verify an identity

The video tutorial introduces rationalizing the denominator as a 'secret weapon' in trigonometry. It explains how this technique can simplify trigonometric expressions by creating Pythagorean identities. The tutorial demonstrates the application of rationalization in various trigonometric problems, emphasizing the importance of experimenting with different approaches. It concludes with a discussion on the broader applications of rationalization in solving complex trigonometric expressions.

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