Area of a Triangle 1/2absinC

Can you find the area of a triangle without knowing the height? Applying trigonometry makes quick work of this type of problem. The video instructor presents problems for scholars to consider and then provides a worked out solution. She emphasizes naming conventions throughout the lesson.

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CCSS: Adaptable
Instructional Ideas

  • Create a guided notes document for pupils to complete as they watch the video
  • Record new formulas and examples in a graphic organizer
Classroom Considerations

  • Relies on prior knowledge of trigonometric ratios

  • Encourages learners to show their work as they complete the problems
  • Includes a link to additional instruction on the same concept

  • None