Given that $x \in [ 0, 2 \pi )$, $$\cos ( 5 x ) = \cos ( 3 x ) \cdot \cos ( 2 x )$$ How many different solutions does the equation have?\ A) 3\ B) 6\ C) 8\ D) 11\ E) 12
Given that $x \in [ 0, 2 \pi )$,
$$\cos ( 5 x ) = \cos ( 3 x ) \cdot \cos ( 2 x )$$
How many different solutions does the equation have?\
A) 3\
B) 6\
C) 8\
D) 11\
E) 12