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Expression : $$cot^2Acos^2A$$
Using, $$(sin^2A+cos^2A=1)$$
= $$\frac{cos^2A}{sin^2A} (1-sin^2A)$$
= $$\frac{cos^2A}{sin^2A}-cos^2A$$
= $$cot^2A-cos^2A$$
=> Ans - (C)
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