OpenStax, Precalculus 2e §7.3 Double-Angle, Half-Angle, and Reduction Formulas · Exercise 34 · Trigonometry · Compound & multiple angles

Double-Angle, Half-Angle, and Reduction Formulas · Exercise 34

Prove the identity given.

$(s in t - cos t)^{2} = 1 - s in (2 t)$

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OpenStax, Precalculus 2e · §7.3 Double-Angle, Half-Angle, and Reduction Formulas · Exercise 34

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