Free Trigonometry Calculators

Trigonometry Calculator | Sin, Cos, Tan

Calculate sine, cosine, tangent, and their inverses for any angle.

Inverse Trig Calculator | Arcsin, Arccos

Calculate arcsin, arccos, arctan and get angles from trig ratios.

Right Triangle Solver | Sides & Angles

Solve any right triangle given two sides or one side and one angle.

Radians to Degrees Converter

Convert angles between radians and degrees instantly.

Unit Circle Calculator | Exact Trig Values

Find exact and decimal values of sin, cos, tan, csc, sec, and cot for any angle on the unit circle. Supports degrees and radians, shows reference angles, quadrant, and coordinates.

Trigonometric Equation Solver | sin, cos & tan Equations

Solve trigonometric equations in the forms a·sin(bx+c)+d=0, a·cos(bx+c)+d=0, a·tan(bx+c)+d=0, and quadratic-in-trig forms like a·sin²x+b·sinx+c=0. Returns exact values at standard angles, the general solution in terms of n, and all solutions in [0, 2π].