vertices etc. of y = 2sin(x) + sin(2x)

mathwhat

2)
Given function: $$\displaystyle y=2\sin(x)+\sin(2x)$$ between $$\displaystyle 0\leq x \leq 2\pi$$

A) Find the intersection points of the graph of this function with the delegates.
B) Find the vertex of the function in this domain.[/QUOTE]

Thank you very much...