OpenStax, Precalculus 2e §7.3 Double-Angle, Half-Angle, and Reduction Formulas · Exercise 53 · Trigonometry · Compound & multiple angles

Double-Angle, Half-Angle, and Reduction Formulas · Exercise 53

Algebraically find an equivalent function, only in terms of $s in x$ and/or $cos x,$ and then check the answer by graphing both equations.

$s in (4 x)$

~8 minWritten answer · compare with the solution

OpenStax, Precalculus 2e · §7.3 Double-Angle, Half-Angle, and Reduction Formulas · Exercise 53

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