Differentiate with respect to x

Question

1/sin x

Answer 1

let y = 1/sinx
= (sinx)^-1
dy/dx = -1(sinx)^-2 (cosx)
= cosx (1/sin^2 x)
= cosx/sinx * 1/sinx
= cotx cscx

Answer 2

Thank you very much Reiny. I was so confused but i have understand from your solution