Trigonometry Calculator
Enter an angle in degrees or radians to get all six trig functions (sin, cos, tan, sec, csc, cot) plus inverses, visualized on an interactive unit circle.
Enter an angle in degrees or radians and instantly get all six trigonometric functions — sine, cosine, tangent, secant, cosecant, and cotangent — along with the inverse functions (arcsin, arccos, arctan). Drag the point around the unit circle to watch each trig segment change in real time, so you can see exactly how sine, cosine, and tangent relate to the angle instead of just memorizing values.
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How to use
- Choose your angle unit: degrees or radians.
- Type in an angle, or drag the red point around the unit circle with your mouse or finger to set it.
- Watch all six trig values update live, and see how the horizontal (cos) and vertical (sin) legs on the unit circle relate to each other.
FAQ
- Are there angles where tangent or secant aren't defined?
- Yes. Wherever cosine equals zero — at 90°, 270°, and so on — tangent and secant blow up to infinity and have no defined value, so the calculator shows "Undefined."
- Is there an input limit for the inverse functions?
- Yes. Arcsine and arccosine only accept values from -1 to 1, since that's the full range sine and cosine can produce.
- Can I enter an angle greater than 360° or a negative angle?
- Yes. Trig functions are periodic, so angles like 400° or -30° are automatically wrapped to an equivalent angle within a 360° (or 2π) cycle behind the scenes, and the calculator still returns the correct values.