Question
Tue January 22, 2013 By: Vidhi Mehta
In NCERT miscellaneous exercize Q.16 I did not understand the following step given in topper NCERT solutions
[cosy.sin(a+y)  -siny.cos(a+y)]dy/dx =   cos(a+y).cos(a+y)
 

cosy = xcos(a+y) To Prove - dy/dx = cos(a+y).cos(a+y)/sina

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Tue January 22, 2013
Mon September 05, 2016

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