Trigonometry and Periodic Phenomena · Geometry & Measurement

The Unit Circle and Radian Measure

Moving beyond degrees to use radians as a more natural measure of rotation and arc length.

Key Questions

  1. 1Why is radian measure preferred over degrees in calculus and advanced physics?
  2. 2How does the unit circle allow us to define trigonometric ratios for angles greater than 90 degrees?
  3. 3What is the relationship between a point on a circle and the sine and cosine of its angle?

ACARA Content Descriptions

AC9M10A06
Year: Year 11
Subject: Mathematics
Unit: Trigonometry and Periodic Phenomena
Period: Geometry & Measurement

Suggested Methodologies

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