find the value of `tan^(-1)(1)+cos^(-1)(1/2)+sin^(-1)(-1/2)`

Explanation

To solve the expression \( \tan^{-1}(1) + \cos^{-1}\left(\frac{1}{2}\right) + \sin^{-1}\left(-\frac{1}{2}\right) \), we will evaluate each term step by step.

### Step 1: Evaluate \( \tan^{-1}(1) \)

The value of \( \tan^{-1}(1) \) is the angle whose tangent is 1. This occurs at:

\[
\tan\left(\frac{\pi}{4}\right) = 1
...