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सिद्ध कीजिए `sqrt((sec theta-1)/(sec theta-1))+sqrt((sec theta+1)/(sec theta-1))=2 cosec theta. ` |
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Answer» यहाँ, L.H.S.`=sqrt((sec theta-1)/(sec theta+1))+sqrt((sec theta+1)/(sectheta-1))=(sqrt(sec theta-1))/(sqrt(sec theta+1))+(sqrt(sec theta+1))/(sqrt(sec theta-1))` `=((sec theta-1)+(sec theta+a))/(sqrt((sec theta+1)(sec theta-1)))=(2 sec theta)/(sqrt(sec ^(2)theta-1))=(2 sec theta)/(sqrt(tan^(2)theta))` `=(2 sec theta)/(tan theta)=2 sec theta cot theta` `=((2)/(cos theta)xx(cos theta)/(sin theta))=(2)/(sin theta)=2 cosec theta=R.H.S.` |
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