Trigonometry

Math and statistics calculators with step-by-step formulas and worked examples for students and professionals.

Trigonometry Calculator

Calculate sine, cosine, tangent and their inverse functions in degrees or radians. Free, instant, with the complementary co-function shown.

Solve a triangle from two angles and a side (AAS) using the law of sines. Get the missing side, third angle and area instantly.

Solve a triangle from two sides and the included angle (SAS) using the law of cosines. Get the missing side, both remaining angles and area.

Find sine, cosine, tangent, reference angle and quadrant for any angle on the unit circle, in degrees or radians. Free and instant.