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The Law of Sines

The Law of Sines. Notes 8 – Section 8.6a. Essential Learnings. Students will understand and be able to use the Law of Sines. Students will be able to use the Law of Sines to solve problems. Law of Sines. Vocabulary. Law of Sines or where a, b, and c are sides in ∆ABC.

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The Law of Sines

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  1. The Law of Sines Notes 8 – Section 8.6a

  2. Essential Learnings • Students will understand and be able to use the Law of Sines. • Students will be able to use the Law of Sines to solve problems.

  3. Law of Sines

  4. Vocabulary Law of Sines or where a, b, and c are sides in ∆ABC

  5. Law of Sines Used to solve triangles when you know: • Two angles and the length of one side • Two sides and one angle opposite one of the sides

  6. Example 1: 2 Angles & 1 Side Solve ∆ABC given A = 78°, B = 42°, a = 5 feet.

  7. Class Problem Solve ∆ABC given A = 48°, B = 86°, c = 10 in.

  8. Example 2: 1 Angle & 2 Sides Solve ∆ABC given A = 43°, a = 37 m, c = 25 m. B 37 m 25 m 43 A C

  9. Class Problem Solve ∆ABC given A = 60°, a = 70, b = 73.

  10. Assignment Law of Sines WS Unit Study Guide 5 Due Monday

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