Lesson: Angle Sum and Difference Identities Mathematics

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In this lesson, we will learn how to derive the angle sum and difference identities, graphically or using the unitary circle, and use them to find trigonometric values.

Lesson Plan

Students will be able to

  • derive the angle sum and difference identities,
  • simplify expressions using angle sum and angle difference identities,
  • evaluate expressions using angle sum and angle difference identities,
  • find missing angles in triangles using the angle sum and difference identities.

Lesson Presentation

Lesson Video

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16:37

Lesson Explainer

Lesson Playlist

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