Prove an identity be creating and adding fractions

The video tutorial explains how to manipulate trigonometric expressions by converting them into fractions and combining them using common denominators. It highlights the use of the Pythagorean identity and explores the secant and cosecant functions. The tutorial emphasizes the importance of recognizing trigonometric identities and provides a step-by-step approach to solving equations.

Explain the relationship between sine squared and cosine squared as discussed in the text.

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Why is it important to recognize trigonometric identities rather than memorizing them?

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