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When plane of dip circle is in magnetic ...

When plane of dip circle is in magnetic meridian it shows dip angle `30^(@),` if plane of dip circle is turned by `30^(@)` ,the new dip angle is
(1) `tan^(-1)((3)/(2)),`
((2) `tan^(-1)((2)/(3))`
((3) `tan^(-1)(2),`
((4) `tan^(-1)((5)/(3))`

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