1.

The true value of angle of dip at a place is 60o, the apparent dip in a plane inclined at an angle of 30o with magnetic meridian is                                                                        [AIEEE 2002]

A.            \[{{\tan }^{-1}}\frac{1}{2}\]   
B.            \[{{\tan }^{-1}}(2)\]  
C.            \[{{\tan }^{-1}}\left( \frac{2}{3} \right)\]                     
D.            None of these
Answer» C.            \[{{\tan }^{-1}}\left( \frac{2}{3} \right)\]                     


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