Enter an angle, select unit, then click Calculate.

The six trigonometric functions — sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent (cot) — relate the angles of a right triangle to the ratios of its sides. They are fundamental in mathematics, physics, engineering, and many other fields. The sine of an angle is the ratio of the opposite side to the hypotenuse, cosine is the ratio of the adjacent side to the hypotenuse, and tangent is the ratio of the opposite side to the adjacent side. The reciprocal functions (csc, sec, cot) are the inverses of sin, cos, and tan respectively. This calculator computes all six functions for any angle, with input in degrees or radians. It also supports angle expressions like π/4 or 3π/2. Understanding these functions is essential for geometry, navigation, signal processing, and wave analysis.

1. Enter an Angle (e.g., 30, 45, π/4, 3π/2).
2. Select Degrees or Radians as the input unit.
3. Click Calculate to compute all six trigonometric functions.
4. The result shows sin, cos, tan, csc, sec, cot, and the angle in both units.
5. Click Reset to restore default example values.