1. Use an identity to find the exact value of cos(?) given that cos(O) = {...

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Answer 1

Answer #1

270 < 0 < 360° 135° < <180° (ind quadrant) Cos (0) 1+ 2/5 V 2 cos e 2 It cose = 2 > 7--1770 10 10

Answer 2

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