For a place, the true value of angle of dip is `30^@` . Find the apparent dip angle when the plane of dip circle is rotated through `45^@` from the magnetic meridian.

Explanation

To find the apparent dip angle when the plane of the dip circle is rotated through \(45^\circ\) from the magnetic meridian, we can follow these steps:

### Step 1: Understand the Given Information
- The true angle of dip (\(\delta\)) is given as \(30^\circ\).
- The angle through which the dip circle is rotated (\(\theta\)) is \(45^\circ\).

### Step 2: Use the Formula for Apparent Dip Angle
The formula to calculate the apparent dip angle (\(\delta'\)) when the dip circle is rotated is:
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