question_answer

What is the value of\[\text{tan 7}{}^\circ \text{ tan 23}{}^\circ \text{ tan 6}0{}^\circ \text{ tan 67}{}^\circ \text{ tan 83}{}^\circ \]?

A)  \[\frac{1}{\sqrt{3}}\]                                    

B)  \[\sqrt{3}\] 

C)  1                            

D)         \[\propto \]