Trigonometry Calculator

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About Trigonometry Calculator

Evaluate sin, cos, tan and their inverses, or verify identities like Pythagorean, double-angle, and half-angle formulas — all with step-by-step work shown. Works in both degrees and radians, perfect for precalculus and trigonometry courses.
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FAQ

Is this geometry calculator free?

Yes! The Geometry & Trig Calculator provides free step-by-step solutions for triangles, circles, angles, trig functions, and shape measurements. No account required.

What types of geometry problems can it solve?

It covers angle operations (addition, conversion, complements), circle calculations (area, circumference, arc length), triangle solving (law of sines/cosines, Pythagorean theorem), trigonometric functions, coordinate geometry (distance, midpoint, slope), and 2D/3D shape measurements.

How does the calculator work?

It uses precise mathematical formulas and Python's math library to compute exact results. Unlike AI chatbots, every answer is deterministic and mathematically guaranteed to be correct.

Does it show formulas and step-by-step work?

Yes! Every solution includes the formulas used, substituted values, and a clear breakdown of each calculation step so you can follow along and learn.

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