Lean a ladder against the wall to create an angle. Class members use an interactive application to determine the angle a ladder makes with the ground. Individuals respond to five questions using inverse trigonometric functions.

Concepts

inverse trigonometric functions, right triangles, acute angles

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Additional Tags

math

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Instructional Ideas

• Use trigonometric tables to determine the angle measurement
• Confirm the measurements by creating the described angles with a ladder or a model

Classroom Considerations

• Pupils should be familiar with trigonometric ratios
• Requires a login, but account setup is free

Pros

• The interactive problems contain hints
• Includes additional examples

Cons

• None

Common Core

HSG-SRT.C.8 MP4 MP5 MP6