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यदि `sin theta++cos theta=sqrt2sin(90^(@)-theta), ` तब `cot theta` का मान ज्ञात कीजिए. |
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Answer» यहाँ, `sin theta+cos theta=sqrt2sin (90^(@)-theta)impliessintheta+cos theta=sqrt2cos theta` `impliessin theta=sqrt2cos theta-cos theta=(sqrt2-1)cos theta` `implies(sin theta)/(cos theta)=((sqrt2-1)cos theta)/(cos theta)` `implies tan theta=(sqrt2-1)impliescot theta=(1)/(sqrt2-1)` `impliescot theta=((sqrt2+1))/((sqrt2-1)(sqrt2+1))=(sqrt2+1)/(2-1)=sqrt2+1` |
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