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Lesson Materials

Lesson 10-1: Law of Sines


Objective:

The student will be able to solve triangles using the Law of Sines and identify when the situation calls for the Law of Sines.

  1. To change the size of angle A, move point C.
  2. To change the size of segment a move point B.
  3. Move point B so that a triangle is formed.
  4. What is the relationship between a, b and h when a triangle is not formed?
  5. What is the relationship between a, b and h when a triangle is formed?
  1. Keeping the measures of a, b and h constant, can more than one triangle be formed?
  2. What is the relationship between a, b and h?
  3. Do the relationships remain the same when ∠ A is obtuse?

IES: Online notes on the Law of Sines. IES