If you can't use a graphing calculator, but a regular calculator, then simply generate a table of values for like so
x y
----------------------
-5.00000 0.95892
-4.00000 0.75680
-3.00000 -0.14112
-2.00000 -0.90930
-1.00000 -0.84147
0.00000 0.00000
1.00000 0.84147
2.00000 0.90930
3.00000 0.14112
4.00000 -0.75680
5.00000 -0.95892
Also, you can throw in special values such as . Once you have your points, plot them:
Now draw a curve through all of the points to graph