OpenStax, Algebra and Trigonometry 2e §9.2 Sum and Difference Identities · Try It 4 · Trigonometry · Compound & multiple angles

Sum and Difference Identities · Try It 4

Write $s in \frac{π}{7}$ in terms of its cofunction.

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OpenStax, Algebra and Trigonometry 2e · §9.2 Sum and Difference Identities · Try It 4

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