Question

Compute all the trigonometric ratios in terms of cosA.

Answer 1

• sinθ=sin2θ =1−cos2θ
• tanθ=cosθsinθ =cosθsin2θ =cosθ1−cos2θ
• cscθ=sinθ1. =sin2θ 1. =1−cos2θ 1.
• secθ=cosθ1.
• cotθ=sinθcosθ

Answer 2

Answer:

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