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If cosec thita -cot thita=1/3, than find cosec thita+cot thita. |
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Answer» I have used the following identity:a²-b²=(a+b)(a-b)1+cot²∆=cosec²∆ Consider ∆ to be theta.Cosec²∆-cot²∆=1(cosec∆+cot∆)(cosec∆-cot∆)=1(Cosec∆+cot∆)1/3=1cosec∆+cot∆=3 |
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