GEO.4 Right Triangle Trigonometry
Beginning Lesson
Viewmongous
When you buy a bigger TV, how much more do you really get? Students use the Pythagorean Theorem and proportional reasoning to investigate the relationship between the diagonal length, aspect ratio, and screen area of a TV.
Topic:
Geometry (G), Similarity, Right Triangles, and Trigonometry (SRT)
Middle Lesson
51-Foot Ladder
How high can a ladder safely reach? Students combine the federal guideline for ladder safety with the Pythagorean Theorem (middle school) or trigonometric ratios (high school) to explore how high you can really climb.
Topic:
Geometry (G), Similarity, Right Triangles, and Trigonometry (SRT)
End Lesson
Sharper Image
Should you buy a camera lens with vibration reduction? Students interpret graphs and use right triangle trigonometry to explore the relationship between focal length, viewing angle, and blurriness.
Topic:
Creating Equations (CED), Seeing Structure in Expressions (SSE), Similarity, Right Triangles, and Trigonometry (SRT)