The true value of dip at a place is `30^(@)` . The vertical plane carrying needle is turned through `30^(@)` from magnetic meridian . Calculate apparent value of angle of dip .

Explanation

To solve the problem, we need to calculate the apparent value of the angle of dip when the vertical plane carrying the needle is turned through \(30^\circ\) from the magnetic meridian. The true value of dip at the place is given as \(30^\circ\).

### Step-by-Step Solution:

1. **Understand the components of the magnetic field**:
- The magnetic field can be resolved into two components: the horizontal component \(B_h\) and the vertical component \(B_v\).
- The angle of dip \(\delta\) is defined as the angle between the magnetic field vector and the horizontal plane.

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