Rain drops fall vertically at a speed of `20m//s`. At what angle do they fall on the wind screen of a car moving with a velocity of `15m//`, if the wind screen velocity incined at an agle of `23^(@)` to the vertical `("cot"^(-1)4/3~~37^(@))`

Options

A. `60^(@)`
B. `30^(@)`
C. `45^(@)`
D. `90^(@)`

Explanation

To solve the problem of determining the angle at which raindrops fall on the windscreen of a car, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the velocities involved**:
- The velocity of the raindrops falling vertically downwards is \( V_r = 20 \, \text{m/s} \).
- The velocity of the car (and hence the windscreen) moving horizontally is \( V_c = 15 \, \text{m/s} \).
- The windscreen is inclined at an angle of \( 23^\circ \) to the vertical.
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