Solve: $cos^{2} θ + cos^{2} θ cot^{2} θ - cot^{2} θ$

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Solve:

cos^{2} θ + cos^{2} θ cot^{2} θ - cot^{2} θ

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Text solutionVerified

We know that,

cot^{2} θ = cose c^{2} θ - 1

So,

cos^{2} θ + cos^{2} θ cot^{2} θ - cot^{2} θ = cos^{2} θ + cos^{2} θ (csc^{2} θ - 1) - co t^{2} θ = cos^{2} θ + co t^{2} θ - cos^{2} θ - cot^{2} θ = 0

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