Trigonometric Ratios and Functions · Geometry and Measurement

Sine and Cosine Laws

Solving for unknown sides and angles in non-right triangles, including the ambiguous case.

Key Questions

  1. 1When is the Sine Law insufficient for solving a triangle, necessitating the Cosine Law?
  2. 2Why does the ambiguous case of the Sine Law exist from a geometric perspective?
  3. 3How can we use trigonometry to map distances that cannot be measured physically?

Ontario Curriculum Expectations

ON: Trigonometric Ratios - Grade 11
Grade: Grade 11
Subject: Mathematics
Unit: Trigonometric Ratios and Functions
Period: Geometry and Measurement

Suggested Methodologies

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Sinusoidal Functions

Graphing sine and cosine curves and identifying amplitude, period, and phase shifts.

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