Precalculus

Applications of Trigonometry Video Review Lessons

The Law of Sines
• The Law of Sines
• Solving a Triangle Given Two Sides and One Angle
• Solving a Triangle (SAS): Another Example
• The Law of Sines: An Application
The Law of Cosines
• The Law of Cosines
• The Law of Cosines (SSS)
• The Law of Cosines (SAS): An Application
• Heron's Formula
Vector Basics
• An Introduction to Vectors
• Finding the Magnitude and Direction of a Vector
• Vector Addition and Scalar Multiplication
Components of Vectors and Unit Vectors
• Finding the Components of a Vector
• Finding a Unit Vector
• Solving Word Problems Involving Velocity or Forces
Complex Numbers in Trigonometric Form
• Graphing a Complex Number and Finding Its Absolute Value
• Expressing a Complex Number in Trigonometric or Polar Form
• Multiplying and Dividing Complex Numbers in Trigonometric or Polar Form
Powers and Roots of Complex Numbers
• Using DeMoivre's Theorem to Raise a Complex Number to a Power
• Roots of Complex Numbers
• More Roots of Complex Numbers
• Roots of Unity
Polar Coordinates
• An Introduction to Polar Coordinates
• Converting between Polar and Rectangular Coordinates
• Graphing Simple Polar Equations