Trigonometry Introduction

Don't go off on a tangent. An instructive video describes how to find the sine, cosine, and tangent ratios of an angle in a right angle. It describes how to label the sides of a right triangle and how to use mnemonics to remember the ratios.

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CCSS: Adaptable
Instructional Ideas

  • Have classmates come up with their own mnemonics for trigonometric ratios
Classroom Considerations

  • Scholars should be familiar with the properties of right triangles
  • Note that the video uses a Casio calculator, but learners should be familiar with how to change their own calculators to degree mode

  • Explanations are easy to follow

  • Does not actually contain any examples in the video
Common Core