# Example 1: Solving a Trig Equation with a Multiple Angle (Radians)

This video explains how to solve a trigonometric equation with a multiple angle using u-substitution.

# Solving Trig Equations IV Part 2: Half and Multiple Angle Using Trig Substitution

This video explains how to solve a trigonometric equation with a half or double angle using trigonometric substitution.

# Solving Trig Equations IV Part 1: Half and Multiple Angle Using U-substitution

This video explains how to solve a trigonometric equation with a half or multiple angle using u-substitution.

# The Law of Cosines

This lesson introduces, proves, and provides examples of the law of cosines.

# Trig Function Values of Inverse Trig Function Values Using Reference Triangles (Not Q1)

This video explains how to evaluate expressions that are in the form of trigonometric function values of inverse trigonometric function values using reference triangles.

# Inverse Trig Function Values of Trig Function Values Using Ref Tri (Nice Angles B)

This video explains how to evaluate expression that are in the form of inverse trigonometric function values of trigonometric function values using reference triangles.

# Inverse Trig Function Values of Trig Function Values Using Ref Triangles (Nice Angles A)

This video explains how to evaluate expression that are in the form of inverse trigonometric function values of trigonometric function values using reference triangles.