Question

find the derivative of cotx​

Answer 1

Step-by-step explanation:

let y=cotx

so, diff. w.r.t x

dy/dx= d/dx(cotx)

or, dy/dx=d/dx(cosx/sinx)

or, dy/dx= {sinx.(-sinx)-cosx.cosx}/sin^2x

or, dy/dx=-cosec^2x.