Applying the Law of Cosines
Each worksheet has 4 problems using the Law of Cosines to find a missing angle.
Student Objectives
- Use the Law of Cosines formula to find a missing angle in a non-right triangle when you know all three side lengths.
- Set up the equation by matching each side length to the correct angle across from it.
- Solve for the angle by isolating the cosine value and using an inverse cosine (arccos) on a calculator.
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