Inverse Trigonometric Ratios: Lesson

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Finding the inverse of trigonometric ratios is not the same as finding the reciprocal. The presentation introduces how to find the angle of a right triangle given sides. Part of a larger playlist on geometry, the video uses the inverse function to find the angle measures and solve right triangles.

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CCSS: Adaptable
Instructional Ideas

  • Lead a discussion about the difference between the inverse of a function and its reciprocal
Classroom Considerations

  • Pupils should understand the trigonometric ratios
  • Requires a scientific calculator

  • Works examples using a calculator correctly
  • Includes a link to other resources finding angles in a right triangle

  • Incorrectly explains the inverse by talking about the reciprocal
Common Core