Skip to content
Trigonometry of Right and Oblique Triangles · Term 3

Area of Oblique Triangles

Students will calculate the area of oblique triangles using trigonometric formulas (e.g., Area = 1/2 ab sin C).

Key Questions

  1. Explain how the sine function is incorporated into the area formula for oblique triangles.
  2. Compare the area formula for oblique triangles to the traditional 1/2 base x height formula.
  3. Analyze the necessary information required to use the trigonometric area formula effectively.

Ontario Curriculum Expectations

CCSS.MATH.CONTENT.HSG.SRT.D.9
Grade: Grade 10
Subject: Mathematics
Unit: Trigonometry of Right and Oblique Triangles
Period: Term 3

Ready to teach this topic?

Generate a complete, classroom-ready active learning mission in seconds.

Browse curriculum by country

AmericasUSCAMXCLCOBR
Asia & PacificINSGAU