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यदि `x= a cos theta , y= a sintheta ` तब ` (dy)/(dx)` का मान ज्ञात कीजिए| |
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Answer» दिया है-` " "x= a cos theta , y=asin theta ` ` rArr" "(dx)/(d theta )=-asin theta ,(dy)/(d theta )= a cos theta ` `therefore " "(dy)/(dx) =(dy//d theta )/(dx//d theta )=(acos theta )/(-asin theta )=-cot theta ` |
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