Precalculus Chapter 5.1 Exercises 9-10, 12-16 Simplify Using Identities of Trigonometry

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Chapter 5.1 Exercises 9-10, 12-16 Simplify Using Identities of Trigonometry. Identities used are two of the Pythagorean Identities, the tangent identity and the reciprocal identities for cosecant and secant.
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