A body makes angular simple harmonic motion of amplitude `pi/10rad` and time period 0.5s. If the body is at a displacement `theta=pi/10` rad at t=0, write the equation giving the angular displacement as a function of time.

Explanation

To find the equation for angular displacement as a function of time for a body undergoing angular simple harmonic motion (SHM), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the given parameters:**
- Amplitude (\( \theta_0 \)): \( \frac{\pi}{10} \) rad
- Time period (\( T \)): \( 0.5 \) s
- Initial displacement (\( \theta(0) \)): \( \frac{\pi}{10} \) rad at \( t = 0 \)
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