Problem preview
F-TF.1 Warmup M3-033-A06-V01

Understand radian measure as arc length on the unit circle.

Locate a radian angle on the unit circle

Problem

Where is the angle \(0\) located on the unit circle?

Big Picture

What this problem is really about

Standard-position angles begin along the positive horizontal axis, so location is determined by how far the terminal ray rotates from that starting direction. With no rotation, the initial and terminal rays coincide. Keep the vertex at the center distinct from the terminal point where the ray meets the unit circle.

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Four variants of this problem type
Curriculum context
Course
Math III
Standard
F-TF.1
Category
Functions
Domain
Trigonometric Functions
Objective
Understand radian measure as arc length on the unit circle.
Problem type
Locate a radian angle on the unit circle