Write the set of values of a for which the equation
`sqrt(3)sinx-cosx=a` has no solution.

Explanation

To solve the equation \( \sqrt{3} \sin x - \cos x = a \) for the values of \( a \) for which there is no solution, we will follow these steps:

### Step-by-Step Solution:

1. **Rewrite the equation**: Start with the given equation:
\[ \sqrt{3} \sin x - \cos x = a \]
...