What this lesson teaches
Trigonometric ratios sin cos tan.
Math in Action
Trigonometry Building Height
Use sin cos tan to measure real building heights!
Duration35 min
Age GroupAges 14–16
DifficultyAdvanced
SubjectMath
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The learning connection
Applying trigonometry to measure a real, visible object in the environment converts abstract ratios into a surveying tool. Students who measure real distances with trigonometry retain the triangle relationships better because they have a self-generated memory of what the ratios physically correspond to.
Try it with your learner
1. Make clinometer. 2. Measure angle to building top. 3. Measure distance. 4. Use tan formula.