Derivative of Tan(x) - PROOF
Calculus
In this video knowledge of trigonometric identities is applied in proving the derivative of tan (x).
Math Video Central
This website provides tutorial videos on Algebra, Geometry, Trigonometry, Pre-Calculus, Basic Calculus, and Statistics and Probability. The videos are for junior and senior high school students as well as for parents who would like to guide their kids in understanding their lessons in math.