Cot 28 Degrees
Sin, Cos, Tan, Cot of an Angle
What is cot 28°?
Answer
cot 28° ≈
1.8807
Angle in radians: 28° = 7π/45. The point of the angle is in quadrant I, where cotangent is positive.
≈ — rounded to 4 decimal places. cot 28° can't be written with square roots: 28° is not a multiple of 3°.
cot 28° = cos 28° / sin 28° ≈ 1.8807
P(cos 28°, sin 28°) ≈ (0.8829, 0.4695)
C(cot 28°, 1) ≈ (1.8807, 1) — where line OP meets the line y = 1.
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
Cotangent of nearby angles
FAQ
What is cot 28°?
cot 28° ≈ 1.8807
Why does cot 28° 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°. 28° is not, so no such exact form exists; the value is used as a decimal: cot 28° ≈ 1.8807.
Why does a calculator show −3.5533 for cot 28?
The calculator is in radian mode (RAD): it takes cot 28 as the cotangent of 28 radians, cot 28 rad ≈ −3.5533. Switch it to degrees (DEG): cot 28° ≈ 1.8807. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.
See Also
- Cot 18 Degrees: Cotangent of 18° on the Unit Circle
- Cot 19 Degrees: Cotangent of 19° on the Unit Circle
- Cot 20 Degrees: Cotangent of 20° on the Unit Circle
- Cot 21 Degrees: Cotangent of 21° on the Unit Circle
- Cot 22 Degrees: Cotangent of 22° on the Unit Circle
- Cot 23 Degrees: Cotangent of 23° on the Unit Circle
- Cot 24 Degrees: Cotangent of 24° on the Unit Circle
- Cot 25 Degrees: Cotangent of 25° on the Unit Circle
- Cot 26 Degrees: Cotangent of 26° on the Unit Circle
- Cot 27 Degrees: Cotangent of 27° on the Unit Circle
- Cot 29 Degrees: Cotangent of 29° on the Unit Circle
- Cot 30 Degrees: Cotangent of 30° on the Unit Circle
- Cot 31 Degrees: Cotangent of 31° on the Unit Circle
- Cot 32 Degrees: Cotangent of 32° on the Unit Circle
- Cot 33 Degrees: Cotangent of 33° on the Unit Circle
- Cot 34 Degrees: Cotangent of 34° on the Unit Circle
- Cot 35 Degrees: Cotangent of 35° on the Unit Circle
- Cot 36 Degrees: Cotangent of 36° on the Unit Circle
- Cot 37 Degrees: Cotangent of 37° on the Unit Circle
- Cot 38 Degrees: Cotangent of 38° on the Unit Circle
- Котангенс 28 градусов (ctg 28°) на единичной окружности
- Cotangente de 28 grados (cot 28°) en el círculo unitario
- Cotangente de 28 graus (cotg 28°) no ciclo trigonométrico