Unit Circle Calculator
Sine, cosine and tangent of any angle.
Enter your values
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Results
- Coordinates
- (-0.707107, 0.707107)
- sin θ
- 0.707107
- cos θ
- -0.707107
- tan θ
- -1
- Radians
- 2.356194
- Quadrant
- Q2
Quick answer
On the unit circle, a point at angle θ has coordinates (cos θ, sin θ), and tan θ is their ratio.
(x, y) = (cos θ, sin θ)
How to use the Unit Circle Calculator
- 1Enter the angle.
- 2Choose degrees or radians.
- 3Read the trig values and quadrant.
Frequently asked questions
Why is tan undefined at 90°?
Cosine is zero there, so the ratio divides by zero.
What are the common angles?
0, 30, 45, 60 and 90 degrees have exact surd values worth memorising.