A man standing on a road has to hold his umbrella at `30^0` with the vertical to keep the rain away. The throws the umbrella and starts running at 10 km/h. He finds that raindrops are hitting his head vertically. Find the speed of raindrops with respect to a. the road, b. the moving man.

Explanation

To solve the problem, we need to analyze the situation step by step.

### Step 1: Understand the initial condition
The man is standing still and holding the umbrella at an angle of \(30^\circ\) with the vertical. This means that the rain is falling at an angle of \(30^\circ\) from the vertical.

### Step 2: Set up the velocity components
Let:
- \(V_r\) = speed of the rain with respect to the road
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