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Q.

3+cot76°cot16°cot76°+cot16°is equal to

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a

tan46°

b

tan16°

c

tan76°

d

tan44°

answer is D.

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Detailed Solution

    3+cot76°cos16°cot76°+cot16°=3sin76°sin16°+cos76°cos16°sin76°+16°=2sin76°sin16°+cos76°16°sin92°=cos60°cos92°+cos60°sin92°=1cos92°sin92°=2sin246°2sin46°cos46°=tan46°=tan90°44°=cot44°

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3+cot76° cot16°cot76°+cot16°is equal to