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Ques.> if 7x= coseco and 7/x= coto find the value of [x2- 1/x2]

Dear student,

7x=cosecθSquaring both sides  49x2 = cosec2θ 49x2=1+cot2θ        -- [using identity 1+cot2θ =cosec2θ] 49x2-1=cot2θ   --(1)also, 7x=cotθSquaring both sides49x2=cot2θ          --(2)from (1) and (2)49x2-1=49x249x2-49x2=149x2+1x2=1x2+1x2=149

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