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Learn about Double-Angle, Power-Reducing, and Half-Angle Identities, and how to solve Trigonometric Equations. Prove and apply essential identities in calculus courses.
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Warm Up What is the Pythagorean Identity?
Goal: Apply the double-angle identities. 5.4 Multiple Angle Identities
What you’ll learn about • Double-Angle Identities • Power-Reducing Identities • Half-Angle Identities • Solving Trigonometric Equations … and why These identities are useful in calculus courses.