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Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ
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Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ

User Mauri
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1 Answer

13 votes

Answer:

Explanation:

I think you mean tan^2θ, not tan2θ.

Use the trigonometric identities

secθ = 1/cosθ

cscθ = 1/sinθ

tanθ = sinθ/cosθ

sin²θ = 1-cos²θ

cos²θ = 1-sin²θ

Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ-example-1
User EdgarX
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