Question

How do you solve: cot(-x)cos(-x)+sin(-x) ?

Answer 1

Please see below.

Explanation:

.

If you meant "how do you simplify this:

`cot(-x)cos(-x)+sin(-x)=cos(-x)/sin(-x)*cos(-x)+sin(-x)=cos^2(-x)/sin(-x)+sin(-x)=(cos^2(-x)+sin^2(-x))/sin(-x)=1/sin(-x)=1/(-sinx)=-cscx`

If you meant to solve for `x` by setting the expression equal to `0`:

`-cscx=0, :. -1/sinx=0, :. sinx=oo` this is invalid as `sinx` can only have values between `1 and -1`.

Therefore, there is no solution.