In `DeltaABC`, prove that:
`sin2A+sin2B+sin2C=4sinAsinBsinC`

Explanation

To prove that in triangle \( ABC \), the equation \( \sin 2A + \sin 2B + \sin 2C = 4 \sin A \sin B \sin C \) holds true, we can follow these steps:

### Step 1: Use the angle sum property of triangles
In triangle \( ABC \), we know that:
\[ A + B + C = 180^\circ \quad \text{(or } \pi \text{ radians)} \]
From this, we can express \( C \) as:
...