Unit Circle Calculator
Calculate unit circle — trigonometric function values for any angle.
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sin(θ)
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cos(θ)
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tan(θ)
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Radians
Recent Calculations
What Is Unit Circle?
Unit Circle converts an angle to its sine, cosine, tangent, and radian equivalent.
Formula
radians = degrees × π/180Frequently Asked Questions
Why is tan(90°) undefined?
At 90° the cosine is zero, and tangent = sin/cos, so dividing by zero makes it undefined.