Online Trigonometry Calculator
Calculate sin, cos, and tan for an angle. Enter angle in degrees or radians.
Frequently Asked Questions
- Do I enter degrees or radians?
- Choose the unit (degrees or radians). Degrees are 0–360; radians are 0–2π for one full circle.
- What about tan(90°)?
- tan(90°) is undefined (infinite). The tool may show a very large number or indicate undefined.
- Are inverse functions supported?
- This tool computes sin, cos, tan of an angle. For arcsin/arccos/arctan (angle from ratio), use a dedicated inverse trig tool if available.
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