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

Explanation

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

### Step 1: Evaluate \( \tan^{-1}(1) \)
The function \( \tan^{-1}(x) \) gives the angle whose tangent is \( x \). We know that:
\[ \tan\left(\frac{\pi}{4}\right) = 1 \]
Thus,
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