This Precalculus video tutorial provides a basic introduction into polar coordinates. It explains how to convert polar coordinates to rectangular coordinates and how to graph polar coordinates by plotting points using the radius of a circle and the angle measured counter clockwise from the positive x axis. In addition, it explains how to convert rectangular coordinates to polar coordinates and how to provide multiple representation of polar coordinates using negative r values / radius and negative angles. This video contains plenty of examples and practice problems.
Trigonometry - Free Formula Sheet:
__________________________________
Solving Trig Equations - Finding All Solutions:
Solving Trig Equations With Multiple Angles:
Solving Trig Equations With Double Angles:
Law of Sines:
More Examples - Law of Sines:
Area of an Oblique Triangle:
______________________________
The Height of a Triangle - Heron's Formula:
Law of Cosines:
Polar Equations to Rectangular Equations:
Rectangular Equations to Polar Equations:
How To Graph Polar Equations:
_________________________________
Complex Numbers - De Moivre's Theorem:
Dot Product of Two Vectors:
Trigonometry Final Exam Review:
Final Exams and Video Playlists:
Full-Length Videos and Worksheets: