Gradient of f(x)=sin(x) in different units

Author:
Ben Sparks
Topic:
Angles

Why 360 degrees? Why 2pi radians?

Change the unit of an angle by sliding the 'a' slider. Or click the buttons. You can adjust the x-scale by shift-dragging the x-axis. Click the check box to see the gradient function. When is the gradient function most like the original function? Is there a 'best' unit for angles?