Tool
Unit Circle Reference
Explore the key unit-circle angles with exact coordinate pairs to connect x = cos θ and y = sin θ.
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Inputs: Tap a highlighted special-angle point around the unit circle.
Outputs: Exact degree/radian angle, coordinate pair (cos θ, sin θ), and highlighted spoke/angle cue.
Used for: Use for memorizing special angles and reading cosine/sine values directly from the unit circle.
trigonometryunit-circlespecial-anglessinecosine