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F Precalculus B / 5. Trigonometric Identities 2 The sin (0) = and 0 lies in Quadrant IV. Find the exact values of the sine

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F Precalculus B / 5. Trigonometric Identities 2 The sin (0) = and 0 lies in Quadrant IV. Find the exact values of the sine 5 and cosine of 20. 4. O 17 4:21 sin (20) = - COS (20) = 25 25 O 4 21 sin (20) = 17 , COS (20) = 25 25 O sin (20) = 4 21 17 cos (20) = 25 25 O sin (20) 17 4 21 COS (20) = 25 25

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