Trigonometry

Complex Numbers and Polar Coordinates Video Review Lessons

Complex Numbers
• Introducing and Writing Complex Numbers
• Rewriting Powers of i
• Adding and Subtracting Complex Numbers
• Multiplying Complex Numbers
• Dividing Complex Numbers
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