Question

Question #0a663

Answer 1

`lim_(xrarr0)cos^-1(1-x)=0`

Explanation:

I'm assuming the question is:

`lim_(xrarr0)cos^-1(1-x)`

We can directly substitute `1` for `x`:

`=cos^-1(1-0)=cos^-1(1)`

This is the angle where `cos(theta)=1`, which is at `theta=0`.

`=0`