"If `x=rsinAcosC ,\ \ y=rsinAsinC` and `z=rcosA` , prove   that `r^2=x^2+y^2+z^2`"
Channel: Doubtnut
Date: 2020-06-28

"If `x=rsinAcosC ,\ \ y=rsinAsinC`
 and `z=rcosA`
 , prove
 
  that
 `r^2=x^2+y^2+z^2`"