can we further simplify`d/dx``(siny)` as `cot y`

What is the simplified value of ((cosec A)/(cot A + tan A )) ^(2) ?

Can we differentiate one species form another species on basis of chromosome number?

(d)/(dx) (cosec x+ cot x )=

Differentiate y=(siny)^(sin2x)

If the solution of the differential equation (dy)/(dx)=1/(xcosy+sin2y) is x=c e^(siny)-k(1+siny), then the value of k is_______

If the solution of the differential equation (dy)/(dx)=1/(xcosy+sin2y) is x=c e^(siny)-k(1+siny), then the value of k is_______