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मूल्यांकन कीजिए `sin(cot^(-1)x)` |
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Answer» माना `cot^(-1)x=theta`, जहाँ `theta in (0,pi)` तब `cot theta=x` चूँकि `theta in (0,pi)` इसलिए `sin theta gt 0` `therefore" "sin theta=(1)/("cosec" theta)=(1)/(sqrt(1+cot^(2)theta))` `=(1)/(sqrt(1+x^(2)))` `rArr" "sin(cot^(-1)x)=(1)/(sqrt(1+x^(2)))` |
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