This calculus video tutorial calculates the equation of a tangent line using implicit differentiation.

This calculus video tutorial calculates the equation of a tangent line using implicit differentiation.

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This calculus video tutorial calculates the equation of a tangent line using implicit differentiation.

This trigonometry video shows the simplification of trigonometric expressions with sine, cosine, tangent, and secant using trig identities.

This trigonometry video shows the simplification of trigonometric expressions with sine, cosine, tangent, and secant using trig identities.

This calculus video tutorial shows integrating the tangent function when raised to an even power.

This calculus video tutorial shows integrating the tangent function when raised to an even power.