Law of Cosines SAS and SSS - Heron's Formula for the Area of a Triangle

Learn to solve oblique triangles using the law of cosines in this 36-minute video lesson. Explore two cases where the law of cosines is applied: SAS (Side-Angle-Side) and SSS (Side-Side-Side). Begin with a derivation of the law of cosines, followed by practical examples for both SAS and SSS scenarios. Discover how to calculate the area of a triangle using Heron's formula, with step-by-step demonstrations. The lesson includes multiple examples for each concept, ensuring a thorough understanding of these trigonometric principles and their applications in solving complex triangular problems.

Introduction.
Derivation of the Law of Cosines.
Law of Cosines SAS Example #1.
Law of Cosines SAS Example #2.
Law of Cosines SSS Example #1.
Law of Cosines SSS Example #2.
Finding the Area Using Heron's Formula Example #1.
Finding the Area Using Heron's Formula Example #2.