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Line of Sight: Triangulating the Shield

Created by Argraide
Updated September 26th, 2026
Line of Sight: Triangulating the Shield

At a glance

Play mode
📱 Solo
Format
🧊 3D
Length
⏱ 30 minutes or more
Subject
Math
Grade
11
Curriculum
Ontario
Curriculum codes
D1.4
D1.5
D1.3

About this activity

Apply the Sine Law, Cosine Law, and ambiguous SSA case analysis to solve real 3D triangulation baselines and bearings across rocky terrain.

What students learn

  • Select appropriate trigonometric laws (Sine vs Cosine) based on given geometric conditions (AAS, SAS, SSS, SSA)
  • Compute missing side lengths and interior angles in oblique surveying triangles
  • Analyze the ambiguous case (SSA) by calculating perpendicular height h and comparing with side lengths
  • Disambiguate two mathematical SSA solutions using physical 3D terrain constraints and sighting observations

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