Find 
, when
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.
= 
= 
= 
………..(1)
= 
= 
……..(2)
Dividing (2) and (2), we get
= 
= 
= -( tan2θ)3/2
1
Find , when
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.
=
=
= ………..(1)
=
= ……..(2)
Dividing (2) and (2), we get
=
=
= -( tan2θ)3/2