Calculus of Trigonometry

From conversations with Sue VanHattum about deriving the derivative of sine or cosine with infinitesimals. See:[br][url]http://thephysicsvirtuosi.com/posts/trigonometric-derivatives.html[/url][br][br]Adjust point B to change d(alpha), the change in angle alpha. Compare the change in sine and cosine to the change in angle. As B gets closer, do the approximations get better?
Calculus of Trigonometry

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