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Unformatted text preview: Use the Power Reducing Formulas . You will find these useful in Calculus with Analytic Geometry. a. Power Reducing Formulas sin 2 θ = 2 2 cos 1 θcos 2 θ = 2 2 cos 1 θ + tan 2 θ = θ θ 2 cos 1 2 cos 1 +b. Change sin 4 θ to something with exponents of 1. 3) Objective 3: Use the Half Angle Formulas . a. Half Angle Formulas 2 cos 1 2 sin θ θ± = 2 cos 1 2 cos θ θ + ± = θ θ θ cos 1 cos 1 2 tan +± = = θ θ sin cos 1= θ θ cos 1 sin + You need to know what quadrant θ /2 is in to assign the + or – to the square root. b. Find sin 22.5 o Section 5.3 Double Angle and Half Angle Formulas, Page 3 Section 5.3 Double Angle and Half Angle Formulas, Page 4 Section 5.3 Double Angle and Half Angle Formulas, Page 4...
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 Spring '08
 BUNDICK
 Calculus, Formulas, Half Angle Formulas, Angle Formul

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