Trigonometry calculators

Angles, triangles and the unit circle. Find the sine, cosine and tangent of any angle, with exact values such as √3/2 for the special angles and a unit-circle diagram showing where each value comes from. Convert between degrees and radians in exact multiples of π, and see the reference angle and quadrant signs explained step by step.

Trigonometry Calculator

Find sin, cos, tan, csc, sec and cot of any angle in degrees or radians.

Degrees to Radians Calculator

Convert degrees to radians as an exact multiple of π (like 135° = 3π/4) and as a decimal, with the steps and a unit circle diagram.

Radians to Degrees Calculator

Convert radians to degrees, including inputs like 5pi/6, with degrees-minutes-seconds and a unit circle diagram.

Sine & Cosine Graph Calculator

Graph y = A sin(Bx + C) + D or the cosine version and find the amplitude, period, phase shift, midline and range, with an animated wave.

Right Triangle Calculator

Solve a right triangle from two sides or a side and an angle using sin, cos, tan and Pythagoras.