Understand radian measure as arc length on the unit circle.
Compare angle equality separately from coterminality
Problem
Compare \(A~=~\pi~/3\) and \(B~=~60°\). Convert \(A\) to degrees, compute \(A~-~B\), decide separately whether the measures are equal and whether their terminal sides are coterminal, then classify the pair.
Compare angle measures only after expressing them in a common unit. A zero difference proves the numerical measures are equal, while any whole-turn difference proves the terminal sides are coterminal. Equality is the stronger statement: equal angles are automatically coterminal, but coterminal angles can differ by nonzero full turns.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
