Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ
1 answer:
Answer:
Step-by-step 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
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