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`cot^(-1)[cot(-(pi)/(3))]=` |
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Answer» मान `y=cot^(-1)[cot(-(pi)/(3))]` अब ` cot(-(pi)/(3))=cot((2pi)/(3)-pi)=cot(-pi+(2pi)/(3))=cot""(2pi)/(3)` `:. cot^(-1)[cot(-(pi)/(3))]=cot^(-1)[cot""(2pi)/(3)]` ` implies cot^(-1)[cot(-(pi)/(3))]=(2pi)/(3)` |
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