question_answer

The value of \[\text{cos2}0{}^\circ \text{ }.\text{ cos4}0{}^\circ \text{ }.\text{ cos6}0{}^\circ .\text{ cos8}0{}^\circ \]is

A)  \[\frac{1}{2}\]  

B)                         \[\frac{1}{4}\]

C)  \[\frac{1}{8}\]                  

D)         \[\frac{1}{16}\]