Trigonometric Ratio Calculator — How It Works
Trigonometric Ratio Calculator math calculator geometry
Trigonometric Ratio Calculator — How It Works
Sine, cosine, and tangent describe the ratios of sides in a right triangle relative to an angle — and extend to any angle via the unit circle.
How it works
Enter an angle in degrees and choose sin, cos, or tan. The angle is converted to
radians (radians = degrees × π / 180) before the trig function is applied.
Example
sin(30°) = 0.5
cos(60°) = 0.5
tan(45°) = 1Common angles
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | 1/2 | √3/2 | √3/3 |
| 45° | √2/2 | √2/2 | 1 |
| 60° | √3/2 | 1/2 | √3 |
| 90° | 1 | 0 | undefined |
Try the Trigonometric Ratio Calculator — instant results, no sign-up.
FAQ
Is this free?
Yes — the Trigonometric Ratio Calculator runs entirely in your browser, no sign-up required.