Im at a point in my book where I have to graph functions of sine and cosine

one such example of the problems is

Graph 1 cycle and lable 5 points on each.

F(x)=sin pie x <---- that is "F of X with sine...then the symbol for pie and x next to it

I know the points and can lable the amplitude and period and I can even graph it on my TI-83 but I am lost when It comes to graphing it by hand ....any help would be great

another question is

Solve for all angles over the interval [0,2pie] such that Sin of theta = 1/2

I have some Ideas and have read the book but I still dont know where to even start with this one either