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: https://www.youtube.com/watch?v=kEcbxiLeGTc Solving Trig Equations With Multiple Angles: https://www.youtube.com/watch?v=eZPEW2hVUd0 Solving Trig Equations With Double Angles: https://www.youtube.com/watch?v=-R7394Dn854 Law of Sines: https://www.youtube.com/watch?v=8qezAG2r0sk More Examples - Law of Sines: https://www.youtube.com/watch?v=9fS0uA4iLxI Area of an Oblique Triangle: https://www.youtube.com/watch?v=vPt6j5e_uhE ______________________________ The Height of a Triangle - Heron's Formula: https://www.youtube.com/watch?v=a1PR9O1Va84 Polar Coordinates: https://www.youtube.com/watch?v=aSdaT62ndYE Polar Equations to Rectangular Equations: https://www.youtube.com/watch?v=flTz_pSzVFI Rectangular Equations to Polar Equations: https://www.youtube.com/watch?v=fTBkr27r3pw How To Graph Polar Equations: https://www.youtube.com/watch?v=jO4lwddfeDA _________________________________ Complex Numbers - De Moivre's Theorem: https://www.youtube.com/watch?v=J6TnZxUUzqU Dot Product of Two Vectors: https://www.youtube.com/watch?v=VzX8KJKFhlM Trigonometry Final Exam Review: https://www.youtube.com/watch?v=OAsbx4TEnL0 Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections