Q. 144.5( 2 Votes )

Find , when

𝒳 = cos-1, 𝒴 = sin-1

Answer :

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


Let us assume u=


=


=


= {by using divide rule, }


Putting value of u


=


= ………..(1)


Let assume v=



= {by using divide rule, }


Putting value of v


=


=


= ……….(2)


Dividing (1) and (2), we get


=


=


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