tan(0°) = 0.
tan(0°) = 0. The angle 0° equals 0 radians.
This is an exact value: 0.
0° lies on the positive x-axis. Remember that tangent is positive in quadrants I and III, and negative in the others, which decides the sign of the answer.
If you get a different number, the calculator is probably in RAD mode. In radians you would enter 0 instead of 0.
| sin 0° | = 0 |
| cos 0° | = 1 |
| tan 0° | = 0 |
| Angle | Radians | Tan |
|---|---|---|
| 0° | 0 | 0 |
| 30° | π/6 | 0.57735 |
| 45° | π/4 | 1 |
| 60° | π/3 | 1.732051 |
| 90° | π/2 | undefined |
| 120° | 2π/3 | -1.732051 |
| 135° | 3π/4 | -1 |
| 150° | 5π/6 | -0.57735 |
| 180° | π | 0 |
| 270° | 3π/2 | undefined |
| 360° | 2π | 0 |
tan(0°) = 0.
0° = 0 radians, so tan(0°) = tan(0) = 0.
It is most likely set to radians. Switch to degree (DEG) mode before entering the angle.
It is zero, so it is neither positive nor negative.
Yes. Use the calculator on this page, or open the full free Scientific Calculator with memory, history and keyboard support.