Tangent & Inverse Tangent Calculator

Calculator to calculate trigonometric tangent.

Tangent Calculator

tan
Result:
*NOTE for scientific notation. E.g: 6e3, 7e-8, 2.63e10

Inverse Tangent Calculator

tan -1
Degrees:
°
Radians:
rad

Tangent Table for certain values

Degrees Tangent values
0
30° ⅓√3
45° 1
60° √3
90° ∞ (Infinity)
180° 0
270° ∞ (Infinity)
360° 0
Tangent periodicity starts at 180°. For tangents, apply below:
Tg (k.180◦ + α) = tg α

Example:
tg 750◦ = tg (2.360◦ + 30◦)
            = tg (4.180◦ + 30◦)
            = tg 30◦ = ⅓√3
tg 750◦ = tg 30◦ = 0.57735027

Tangent Formula
1. tg a◦ = x∕y → y = x tg a◦
2. tg(-a◦) = -tg a◦
3. tg (180◦ – a◦) = -tg a◦
4. tg (90◦ + a◦) = -cotg a◦
5. tg (180◦ + a◦) = tg a◦
6. tg (270◦ – a◦) = cotg a◦
7. tg (270◦ + a◦) = -cotg a◦
8. tg (360◦ – a◦) = -tg a◦
9. tg (360◦ – a◦) = tg a◦