question_answer

Which one of the following pairs is correctly matched? If then

A)  \[x=\frac{1+\sin 60{}^\circ -\cos 60{}^\circ }{1+\sin 60{}^\circ +\cos 60{}^\circ }\,\,\,\,\,\,\,x=\tan 60{}^\circ \]

B)  \[x=\frac{1+\sin 90{}^\circ -\cos 90{}^\circ }{1+\sin 90{}^\circ -\cos 90{}^\circ }\,\,\,\,\,\,\,x=\tan 30{}^\circ \]

C)  \[x=\frac{2\tan 30{}^\circ }{1+{{\tan }^{2}}30{}^\circ }\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x=\tan 60{}^\circ \]

D)  \[x=\frac{1-{{\tan }^{2}}30{}^\circ }{1+{{\tan }^{2}}30{}^\circ }\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x=\cos 60{}^\circ \]

E)  None of these