This trigonometry video tutorial provides a basic introduction into the law of cosines. It explains how to use the law of cosines formula for finding angles and for finding the value of missing sides. It explains how to solve the sss triangle and the sas triangle using the law of cosines first and then finishing up the problem using the law of sines formula. This trig video contains plenty of examples and practice problems.

Solving Trig Equations - Finding All Solutions:
   • Solving Trigonometric Equations By Fi...  

Solving Trig Equations With Multiple Angles:
   • How To Solve Trigonometric Equations ...  

Solving Trig Equations With Double Angles:
   • Solving Trigonometric Equations By Fa...  

Law of Sines:
   • Law of Sines - Basic Introduction  

More Examples - Law of Sines:
   • Law of Sines, Basic Introduction, AAS...  

Area of an Oblique Triangle:
   • Area of an Oblique Triangle - SAS & S...  

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The Height of a Triangle - Heron's Formula:
   • How To Calculate The Height of a Tria...  

Polar Coordinates:
   • Polar Coordinates Basic Introduction,...  

Polar Equations to Rectangular Equations:
   • Polar Equations to Rectangular Equati...  

Rectangular Equations to Polar Equations:
   • Rectangular Equation to Polar Equatio...  

How To Graph Polar Equations:
   • How To Graph Polar Equations  

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Complex Numbers - De Moivre's Theorem:
   • Complex Numbers In Polar - De Moivre'...  

Dot Product of Two Vectors:
   • Dot Product of Two Vectors  

Trigonometry Final Exam Review:
   • Trigonometry Final Exam Review  

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