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

Options

A. `(1)/(cos x)`
B. `(1)/(sin x)`
C. `(1)/(tan x)`
D. `cos x`

Answer

a

Explanation

(a) `tan theta=(V)/(H). tan theta. =(V)/(H cos x), (tan theta.)/(tan theta)=(1)/(cos x)`