OpenStax, Precalculus 2e §7.2 Sum and Difference Identities · Exercise 44 · Trigonometry · Compound & multiple angles

Sum and Difference Identities · Exercise 44

Find the exact value algebraically, and then confirm the answer with a calculator to the fourth decimal point.

$cos (16 5^{\circ})$

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~8 minWritten answer · compare with the solution

OpenStax, Precalculus 2e · §7.2 Sum and Difference Identities · Exercise 44

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