Question

differentiation of -1/1+x

Answer 1

is possible to find the derivative of trigonometric functions.

Here is a list of the derivatives that you need to know:

d (sin x)  =  cos x
dx

d (cos x)  = –sin x
dx

d (sec x)   =  sec x tan x
dx

d (cosec x) = –cosec x cot x
dx

d (tan x) =  sec²x
dx

d (cot x)  =  –cosec²x
dx

One condition upon these results is that x must be measured in radians.