Tan 720 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 720°?
Answer
tan 720° =
0
Angle in radians: 720° = 4π. 720° = 2 · 360° — two full turns: the point is on the x-axis, (1, 0).
tan 720° = tan(720° − 2 · 360°) = tan 0°
tan 720° = sin 720° / cos 720° = 0 / 1 = 0
P(cos 720°, sin 720°) = (1, 0)
T(1, tan 720°) = (1, 0) — where line OP meets the line x = 1.
+2 turns: the drawing shows 0°.
See Also
- Arcsin, Arccos, Arctan, Arccot - The angle from the value of its sine, cosine, tangent or cotangent: exact in degrees and π, with the check and the unit circle
- Square Root Calculator - Calculate the square root of any number
- Simplify Square Root Calculator - Write any square root in simplest radical form, step by step
- Geometry Formulas: Area, Volume, Perimeter - The formula for every standard shape, where it comes from, and worked examples
FAQ
What is tan 720°?
tan 720° = 0
Why is tan 720° equal to 0?
720° ends at the same point as 0°, (1, 0), and tan = y / x = 0 / 1 = 0.
Why does a calculator show 0.6484 for tan 720?
The calculator is in radian mode (RAD): it takes tan 720 as the tangent of 720 radians, tan 720 rad ≈ 0.6484. Switch it to degrees (DEG): tan 720° = 0. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.
See Also
- Tan 342 Degrees: Tangent of 342° on the Unit Circle
- Tan 345 Degrees: Tangent of 345° on the Unit Circle
- Tan 355 Degrees: Tangent of 355° on the Unit Circle
- Tan 360 Degrees: Tangent of 360° on the Unit Circle
- Tan 390 Degrees: Tangent of 390° on the Unit Circle
- Tan 400 Degrees: Tangent of 400° on the Unit Circle
- Tan 450 Degrees: Tangent of 450° on the Unit Circle
- Tan 540 Degrees: Tangent of 540° on the Unit Circle
- Tan 570 Degrees: Tangent of 570° on the Unit Circle
- Tan 690 Degrees: Tangent of 690° on the Unit Circle
- Тангенс 720 градусов (tg 720°) на единичной окружности
- Tangente de 720 grados (tan 720°) en el círculo unitario
- Tangente de 720 graus (tg 720°) no ciclo trigonométrico