Cosine Derivative

Now we look at another sinusoidal curve, the cosine function.

Drag the point of tangency around to see the slope at the point.

This document requires an HTML5-compliant browser.
x
Slope

How does the slope change as the x coordinate does?

Noting the derivative of the sine function, what do you think the derivative of the cosine function is?

App generated by Geometry Expressions