Section 5.4 Double_HalfAngle.pdf

Section 5.4 Double_HalfAngle.pdf - Section 5.4 Double and...

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Section 5.4 Double and Half- Angle Formulas A. Double Angle Formulas Ex. 1: If cos 𝜃 = − 3 5 , and 𝜃 is in quadrant II, find the exact value of each expression. a. sin 2𝜃 b. cos 2𝜃 c. tan 2𝜃
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Ex. 2: Find the exact value of each expression. a. 1 − 2 sin 2 ( 𝜋 12 ) b. 2 tan 22.5 0 1−tan 2 22.5 0 B. Half-Angle Formulas Ex. 3: Use a half-angle formula to find the exact value of
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