Summary
A comprehensive guide on how to apply the Law of Cosines to solve for unknown sides and angles in oblique triangles, covering SSS and SAS cases.
Highlights
Introduction to the Law of Cosines00:00:03
An introduction to the Law of Cosines and its utility in solving parts of oblique triangles, as a follow-up to previous lessons on the Law of Sines.
Understanding the Formula00:00:27
Explanation of the algebraic patterns for the Law of Cosines, showing how to determine the formula based on the specific side or angle needed.
Example 1: Side-Side-Side (SSS) Case00:01:12
A step-by-step walkthrough of finding an unknown angle in a triangle where all three sides are given, demonstrating how to isolate the cosine function.
Example 2: Side-Angle-Side (SAS) Case00:07:55
Demonstrating how to calculate an unknown side length when two sides and the included angle are provided, including rounding results to the nearest integer.