Equation of Tangent Line and Normal Line to a Cubic Function

This video explains how to find the equation of a tangent line and normal line to a cubic function at a given point.

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Evaluate Inverse Tangent Expressions Using the Unit Circle (Nice Values)

This video explains how to use the unit circle to evaluate inverse trigonometric expressions.

Find 6 Trig Function Values of 315 Degrees (Reference Triangle and Unit Circle)

This video explains how to determine the sine, cosine, tangent, cosecant, secand, and cotangent function values of 315 degrees using a reference triangle and the unit circle.