I meant
dy/dx= -csc(x) - (cos(x))^2cot(x)
d/dx (cot(x) / sin(x)) =
I got dy/dx= -csc(x) - cos(x)cot(x)
2 answers
((-csc^2x)(sinx)-(cotx)(cosx))/sin^2x
(-1/sinx - cos^2x/sinx)/sin^2x
-(1+cos^2x)/sin^3x
-(cscx+cosx*cotx)/sin^2x
You seem to have lost that sin^2x in the denominator
(-1/sinx - cos^2x/sinx)/sin^2x
-(1+cos^2x)/sin^3x
-(cscx+cosx*cotx)/sin^2x
You seem to have lost that sin^2x in the denominator