Question #bd1e6
1 Answer
Oct 21, 2016
The quotient rule states that
As
#=(sin(x)(d/dxcos(x))-cos(x)(d/dxsin(x)))/sin^2(x)#
#=(sin(x)(-sin(x))-cos(x)(cos(x)))/sin^2(x)#
#=(-sin^2(x)-cos^2(x))/sin^2(x)#
#=-(sin^2(x)+cos^2(x))/sin^2(x)#
#=-1/sin^2(x)#
#=-csc^2(x)#
