Trigonometry Calculator

Trigonometric functions are essential in mathematics, physics, engineering, graphics, and signal processing, but mistakes often happen when degrees and radians are mixed or when undefined values are overlooked.

This calculator gives the six main trigonometric ratios and the principal inverse values in one view, making it easier to review standard angles and verify calculator or software output. It is especially useful when you need to compare several related values quickly without rewriting the angle in different forms.

If you only need to convert between degrees and radians, use the [Angle Converter](/en/calc/angle-converter/) to compare pi notation and degree-minute-second formats. For broader math work with powers, roots, and logarithms, use the [Scientific Calculator](/en/calc/scientific-calculator/). To compare trigonometry with logarithmic calculations, use the [Logarithm Calculator](/en/calc/logarithm-calculator/) as well.

The inverse functions (asin, acos, atan) return principal values only, so even when multiple solutions exist, you get a single canonical answer. Tooltips on each function label show the principal value range.