The true value of angle of dip at a plac...

The true value of angle of dip at a place is `60^(@)` . The apparent angle of dip , when a magnetic needle is rotated through `30^(@)` from the magnetic meridian at the same place , is

`tan^(-1) (2)`

`tan ^(-1) ((1)/(2))`

`tan^(-1) ((3)/(2))`

`tan^(-1) ((4)/(3))`

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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.

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