Tan 0 Degrees

Sin, Cos, Tan, Cot of an Angle
Function
Angle (°)

What is tan 0°?

Answer

tan 0° =
0

Angle in radians: 0° = 0. The point of the angle is on the x-axis: (1, 0).

tan 0° = sin 0° / cos 0° = 0 / 1 = 0

xyOP

P(cos 0°, sin 0°) = (1, 0)

T(1, tan 0°) = (1, 0) — where line OP meets the line x = 1.

All four functions of 0°
FunctionExact valueDecimal
sin 0°00
cos 0°11
tan 0°00
cot 0°undefined—

See Also

Recalculate with different values ↑

Tangent of nearby angles

Angletan
0°0
1°≈ 0.0175
2°≈ 0.0349
3°≈ 0.0524
4°≈ 0.0699
5°≈ 0.0875
6°≈ 0.1051

FAQ

What is tan 0°?

tan 0° = 0

Why is tan 0° equal to 0?

The point of 0° on the unit circle is (1, 0), and tan = y / x = 0 / 1 = 0.

What is the sign of tangent in each quadrant?

Tangent is the ratio y / x of the point of the angle: positive in quadrants I and III, negative in II and IV.

See Also