Q. 24.7( 3 Votes )

Find , when

𝒳 = a cos θ , 𝒴 = b sin θ

Answer :

y and x are given in a different variable that is θ . We can find by finding and and then dividing them to get the required thing.

= (=cosθ )


= bcosθ. ……(1)


()


= -asinθ …….(2)


Dividing (1) and (2), we get


= ( = cotθ )


= .


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