Trigonometric Functions and Identities · Geometry and Trigonometry

The Unit Circle and Radian Measure

Transitioning from degree based measurement to the more natural unit of radians for circular motion.

Key Questions

  1. 1Why is radian measure considered a dimensionless unit and why is this advantageous in calculus?
  2. 2How does the unit circle allow us to define trigonometric ratios for angles greater than 90 degrees?
  3. 3What is the geometric relationship between the coordinates of a point on the unit circle and the basic trig functions?

Ontario Curriculum Expectations

ON: Trigonometric Functions - Grade 12
Grade: Grade 12
Subject: Mathematics
Unit: Trigonometric Functions and Identities
Period: Geometry and Trigonometry

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