Question: Half-Angle Formulas 1 + cos u I COS U sin = 2 2 COS I sin u tan 2 sin u 1 + cos

Half-Angle Formulas 1 + cos u I COS U sin = 2

Half-Angle Formulas 1 + cos u I COS U sin = 2 2 COS I sin u tan 2 sin u 1 + cos u " 2 The signs of sin and cos depend on the quadrant in which lies. Question 6 3 = 4 Suppose is an angle such that cos(0) - If 0

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