(sec^2 theta-1)(cosec^2 theta-1)
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sec^2 theta -1=tan^2 theta
cosec^2 theta -1=cot^2 theta
(tan theta ×cot theta )^2=1
answer is1
cosec^2 theta -1=cot^2 theta
(tan theta ×cot theta )^2=1
answer is1
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Hope u understand my ans...^_^
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