Tan 160 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 160°?
Answer
tan 160° ≈
−0.3640
Angle in radians: 160° = 8π/9. The point of the angle is in quadrant II, where tangent is negative.
≈ — rounded to 4 decimal places. tan 160° can't be written with square roots: 160° is not a multiple of 3°.
tan 160° = tan(180° − 20°) = −tan 20° ≈ −0.3640
tan 160° = sin 160° / cos 160° ≈ −0.3640
P(cos 160°, sin 160°) ≈ (−0.9397, 0.3420)
T(1, tan 160°) ≈ (1, −0.3640) — where line OP meets the line x = 1, on the extension of the ray beyond O (dashed).
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
Tangent of nearby angles
FAQ
What is tan 160°?
tan 160° ≈ −0.3640
Why does tan 160° have no exact value?
A trigonometric value of a whole number of degrees can be written with square roots only when the angle is a multiple of 3°. 160° is not, so no such exact form exists; the value is used as a decimal: tan 160° ≈ −0.3640.
Why does a calculator show −0.2249 for tan 160?
The calculator is in radian mode (RAD): it takes tan 160 as the tangent of 160 radians, tan 160 rad ≈ −0.2249. Switch it to degrees (DEG): tan 160° ≈ −0.3640. 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 127 Degrees: Tangent of 127° on the Unit Circle
- Tan 130 Degrees: Tangent of 130° on the Unit Circle
- Tan 134 Degrees: Tangent of 134° on the Unit Circle
- Tan 135 Degrees: Tangent of 135° on the Unit Circle
- Tan 140 Degrees: Tangent of 140° on the Unit Circle
- Tan 142 Degrees: Tangent of 142° on the Unit Circle
- Tan 144 Degrees: Tangent of 144° on the Unit Circle
- Tan 145 Degrees: Tangent of 145° on the Unit Circle
- Tan 150 Degrees: Tangent of 150° on the Unit Circle
- Tan 159 Degrees: Tangent of 159° on the Unit Circle
- Tan 162 Degrees: Tangent of 162° on the Unit Circle
- Tan 164 Degrees: Tangent of 164° on the Unit Circle
- Tan 165 Degrees: Tangent of 165° on the Unit Circle
- Tan 167 Degrees: Tangent of 167° on the Unit Circle
- Tan 175 Degrees: Tangent of 175° on the Unit Circle
- Tan 179 Degrees: Tangent of 179° on the Unit Circle
- Tan 180 Degrees: Tangent of 180° on the Unit Circle
- Tan 195 Degrees: Tangent of 195° on the Unit Circle
- Tan 198 Degrees: Tangent of 198° on the Unit Circle
- Tan 200 Degrees: Tangent of 200° on the Unit Circle
- Тангенс 160 градусов (tg 160°) на единичной окружности
- Tangente de 160 grados (tan 160°) en el círculo unitario
- Tangente de 160 graus (tg 160°) no ciclo trigonométrico