The angle of elevation of a cloud from a point h metre above a lake is `theta`.The angle depression of its reflection in the lake is `45^@`The height of the cloud is

Explanation

To solve the problem, we need to find the height of the cloud above the lake given the angle of elevation from a point above the lake and the angle of depression of the cloud's reflection in the lake.

### Step-by-Step Solution:

1. **Understanding the Setup**:
- Let the height of the point above the lake be \( h \).
- Let the height of the cloud above the lake be \( d \).
- The angle of elevation to the cloud from the point is \( \theta \).
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