Trigonometric Ratios: Sine

This Trigonometric Ratios: Sine video also includes:

What happens when you don't have enough information to use the Pythagorean Theorem? Time for some trig! The second lesson in a series of four introduces the definition of sine, teaches how to find the sine ratio of a right triangle, and then shows how to use the definition of sine to find a missing side length.

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CCSS: Adaptable
Instructional Ideas

  • Flip your classroom by assigning the videos as homework; use class time to complete practice problems
  • Use the videos to introduce the first trigonometric ratio
Classroom Considerations

  • The video requires Internet access to view

  • Offers clear explanations and shows all steps 

  • Does not use exploration to discover the sine ratio; it is simply given to pupils
Common Core