The plane of dip circle is set in the geographic meridian and the apparent dip is `theta_(1)`. It is
Channel: Doubtnut
Date: 2020-01-19

The plane of dip circle is set in the geographic meridian and the apparent dip is `theta_(1)`. It is then set in a vertical plane perpendicular to the geographic meridian. Now, the apparent dip is `theta_(2)`. The angle of declination `theta` at that place is