Evaluate 3 cot^2theta-3cosec^2theta
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theta=A
=3cot²A—3cosec²A
=3[cot²A—cosec²A]
<using identity cosec²A—cot²A=1>
=3(–1)
=–3. answer
=3cot²A—3cosec²A
=3[cot²A—cosec²A]
<using identity cosec²A—cot²A=1>
=3(–1)
=–3. answer
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