"If `cosy=xcos(a+y)`, with `cosa!=+-1`, prove that  `(dy)/(dx)=(cos^2(a+y))/(sina)`."
Channel: Doubtnut
Date: 12/04/2020

"If `cosy=xcos(a+y)`
, with `cosa!=+-1`
, prove that
  `(dy)/(dx)=(cos^2(a+y))/(sina)`
."