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Question

If cosecθ=32, then find the value of 2(cosec2θ+cot2θ).

A
4
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B
5
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C
6
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D
7
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Solution

The correct option is D 7
cosecθ=(32)2(cosec2θ+cot2θ)=2[cosec2θ+cosec2θ1]=2[2×(32)211]=2[2×(94)1]=2((92)1)=2×(72)=7

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