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A dip needle lies initially in the magne...

A dip needle lies initially in the magnetic merdian when it shows an angle of dip `theta` at a place. The dip circle is rotated through an angle x in the horizontal plane and then it shows an angle of dip `theta^(')`. Then `tantheta^(')/tantheta` is

A

`(1)/(cos x)`

B

`(1)/(sin x)`

C

`(1)/(tan x)`

D

`cos x`

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