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Prove that cosecθ1cos2θ=1

Answer
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Hint: In this question, we will proceed by considering the L.H.S part of the given equation. Then use the formula in trigonometric identities and trigonometric ratios to prove that the L.H.S part of the given equation is equal to the R.H.S part.

Complete step-by-step answer:
Given equation is cosecθ1cos2θ=1
Consider the L.H.S part of the equation
We know that 1cos2θ=sin2θ. By using this formula, we have
L.H.S=cosecθsin2θL.H.S=cosecθ(sinθ)
We know that cosecθ=1sinθ. By using this formula, we have
L.H.S=cosecθsin2θL.H.S=1sinθ(sinθ)=sinθsinθL.H.S=1L.H.S=R.H.S
Hence, proved that cosecθ1cos2θ=1.

Note: Here we have used the trigonometry identity sin2θ+cos2θ=11cos2θ=sin2θ and the trigonometric ratio cosecθ=1sinθ. So, in solving these types of questions, remember all the formula n trigonometry to solve easily.

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