Cos 11 Degrees
Sin, Cos, Tan, Cot of an Angle
What is cos 11°?
Answer
cos 11° ≈
0.9816
Angle in radians: 11° = 11π/180. The point of the angle is in quadrant I, where cosine is positive.
≈ — rounded to 4 decimal places. cos 11° can't be written with square roots: 11° is not a multiple of 3°.
P(cos 11°, sin 11°) ≈ (0.9816, 0.1908)
P(cos 11°, sin 11°) ≈ (0.9816, 0.1908)
Highlighted: the projection on the x-axis — cosine, x ≈ 0.9816.
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
Cosine of nearby angles
FAQ
What is cos 11°?
cos 11° ≈ 0.9816
Why does cos 11° 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°. 11° is not, so no such exact form exists; the value is used as a decimal: cos 11° ≈ 0.9816.
Why does a calculator show 0.0044 for cos 11?
The calculator is in radian mode (RAD): it takes cos 11 as the cosine of 11 radians, cos 11 rad ≈ 0.0044. Switch it to degrees (DEG): cos 11° ≈ 0.9816. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.
See Also
- Cos 1 Degree: Cosine of 1° on the Unit Circle
- Cos 2 Degrees: Cosine of 2° on the Unit Circle
- Cos 3 Degrees: Cosine of 3° on the Unit Circle
- Cos 4 Degrees: Cosine of 4° on the Unit Circle
- Cos 5 Degrees: Cosine of 5° on the Unit Circle
- Cos 6 Degrees: Cosine of 6° on the Unit Circle
- Cos 7 Degrees: Cosine of 7° on the Unit Circle
- Cos 8 Degrees: Cosine of 8° on the Unit Circle
- Cos 9 Degrees: Cosine of 9° on the Unit Circle
- Cos 10 Degrees: Cosine of 10° on the Unit Circle
- Cos 12 Degrees: Cosine of 12° on the Unit Circle
- Cos 13 Degrees: Cosine of 13° on the Unit Circle
- Cos 14 Degrees: Cosine of 14° on the Unit Circle
- Cos 15 Degrees: Cosine of 15° on the Unit Circle
- Cos 16 Degrees: Cosine of 16° on the Unit Circle
- Cos 17 Degrees: Cosine of 17° on the Unit Circle
- Cos 18 Degrees: Cosine of 18° on the Unit Circle
- Cos 19 Degrees: Cosine of 19° on the Unit Circle
- Cos 20 Degrees: Cosine of 20° on the Unit Circle
- Cos 21 Degrees: Cosine of 21° on the Unit Circle
- Косинус 11 градусов (cos 11°) на единичной окружности
- Coseno de 11 grados (cos 11°) en el círculo unitario
- Cosseno de 11 graus (cos 11°) no ciclo trigonométrico