General information needed for problems of this sort:

y = a·sin(bx+c) + d  or y = a·cos(bx+c) + d   

amplitude = |a|
period = 
horizontal shift = |c/b| right if c negative, left if c positive
vertical shift = |d| up if d positive, down if d negative.

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y = sin(2x+)

Use a=1, b=2, c=, d=0 in the above general information:

Edwin