If cosθ = x, then ± √(1+x)/2 = .
cosθ/2
sinθ/2
cos2θ
sin2θ...
Mathematics, 30.07.2020 21:01 cupcake20019peehui
If cosθ = x, then ± √(1+x)/2 = .
cosθ/2
sinθ/2
cos2θ
sin2θ
Answers: 3
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