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OpenStax, Algebra and Trigonometry 2e §9.1 Verifying Trigonometric Identities and Using Trigonometric Identities to Simplify Trigonometric Expressions · Example 3 · Trigonometry · Identities

Verifying the Equivalency Using the Even-Odd Identities

Verify the following equivalency using the even-odd identities:

$(1 + s in x) [1 + s in (- x)] = co s^{2} x$

~5 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §9.1 Verifying Trigonometric Identities and Using Trigonometric Identities to Simplify Trigonometric Expressions · Example 3

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