The lower window of a house is at a height of 2m above the ground and its upper window is 4m vertically above the tower window. At certain instant the angles of elevation of a balloon from these windows are observed to be `60^(@)` and `30^(@)`, respectively. Find the height of the balloon above the ground.

Explanation

To solve the problem, we will use the concept of trigonometry, specifically the tangent function, which relates the angle of elevation to the height and distance from the object.

### Step-by-step Solution:

1. **Identify the heights**:
- The height of the lower window from the ground = 2 m.
- The height of the upper window = height of lower window + 4 m = 2 m + 4 m = 6 m.

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