Question

Question #f15cd

Answer 1

`LHS= 1/cosx+1/cotx`

`= 1/cosx+1/(cosx/sinx)`

`= 1/cosx+sinx/cosx`

`= (1+sinx)/cosx`

`= ((1+sinx)(1-sinx))/((1-sinx)cosx)`

`= (1-sin^2x)/((1-sinx)cosx)`

`= (cos^2x)/((1-sinx)cosx)`

`=cosx/(1-sinx) =RHS`

Proved