Q. 85.0( 5 Votes )

Find , when

𝒳 = cos θ + cos 2θ, 𝒴 = sin θ + sin 2θ

Answer :

Theorem: 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 + cos2θ×2 ………..(1)



= -sinθ -2sin2θ …………….(2)


Dividing (1) and (2), we get


=


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