Heights of transmitting and receiving antennas from earth surface are `h_(T)` and `h_(R)` respectively. Write the relation for maximum line-of-sight (LOS) distance two antennas.

Explanation

To derive the relation for the maximum line-of-sight (LOS) distance between two antennas, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Geometry**:
- Consider the Earth as a sphere with radius \( R \).
- Let \( h_T \) be the height of the transmitting antenna above the Earth's surface.
- Let \( h_R \) be the height of the receiving antenna above the Earth's surface.
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