UCSS Math III 3.2.2 Example 2

Author:
Walch Education
Given the diagram of , find the length of side . Round the length to the nearest tenth.
GeoGebra Applet
  1. Identify which values are equivalent to , , and in the Law of Cosines formula.
  2. Substitute the known values into the Law of Cosines formula.
  3. Solve the resulting equation for .
This applet is provided by Walch Education as supplemental material for the UCSS Secondary Math III program. Visit www.walch.com for more information on our resources.

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