If ABCD is a cyclic quadrilateral, then find the value of `sinA + sinB -sinC - sinD`

Explanation

To solve the problem, we need to find the value of \( \sin A + \sin B - \sin C - \sin D \) given that ABCD is a cyclic quadrilateral.

### Step-by-Step Solution:

1. **Understanding Cyclic Quadrilaterals**:
In a cyclic quadrilateral, the sum of the opposite angles is \( 180^\circ \). Therefore, we have:
\[
A + C = 180^\circ \quad \text{and} \quad B + D = 180^\circ
...