question_answer

lf A=\[ta{{n}^{-1}}\left( \frac{x\sqrt{3}}{2k-x} \right)\] and B=\[ta{{n}^{-1}}\left( \frac{2x-k}{k\sqrt{3}} \right)\] tan- then the value of A - B is

A)  \[0{}^\circ \]               

B)  \[45{}^\circ \]          

C)  \[60{}^\circ \]             

D)  \[30{}^\circ \]