Auto fill 0-360 in column A, enter the equation as a formula in B1 referencing A1 for the degrees value then auto fill down. Graph as normal.
Simples.
Excel does work in Radians for the Trigonometric functions (SIN, COS, etc)
You can convert with the built in function as above or if you're using degrees, then you can convert to radians by multiplying by PI/180.
So y=2* SIN(x*PI()/180)
You should get a graph which starts at 0, curves up to 2 at 90 degrees, then down to 0 again at 180 degrees, then down to -2 at 270 degrees and back to 0 at 360 degress.
Do this:
In Column A make Cell A1 say DEGREES. Then make cell A2 say 0, cell A3 say 1, fill down column A till you have 0 to 360.
Then in Column B make Cell B1 say RADIANS. In Cell B2 put the formula =A2*PI()/180 and fill down
Then in Column C make Cell C1 say Y-axis. In cell C2 put the formula =2*SIN(B2) and fill down.
Then highlight columns B and C and plot your graph.