Tan 28 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 28°?
Answer
tan 28° ≈
0.5317
Angle in radians: 28° = 7π/45. The point of the angle is in quadrant I, where tangent is positive.
≈ — rounded to 4 decimal places. tan 28° can't be written with square roots: 28° is not a multiple of 3°.
tan 28° = sin 28° / cos 28° ≈ 0.5317
P(cos 28°, sin 28°) ≈ (0.8829, 0.4695)
T(1, tan 28°) ≈ (1, 0.5317) — where line OP meets the line x = 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
Tangent of nearby angles
FAQ
What is tan 28°?
tan 28° ≈ 0.5317
Why does tan 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: tan 28° ≈ 0.5317.
Why does a calculator show −0.2814 for tan 28?
The calculator is in radian mode (RAD): it takes tan 28 as the tangent of 28 radians, tan 28 rad ≈ −0.2814. Switch it to degrees (DEG): tan 28° ≈ 0.5317. 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 18 Degrees: Tangent of 18° on the Unit Circle
- Tan 19 Degrees: Tangent of 19° on the Unit Circle
- Tan 20 Degrees: Tangent of 20° on the Unit Circle
- Tan 21 Degrees: Tangent of 21° on the Unit Circle
- Tan 22 Degrees: Tangent of 22° on the Unit Circle
- Tan 23 Degrees: Tangent of 23° on the Unit Circle
- Tan 24 Degrees: Tangent of 24° on the Unit Circle
- Tan 25 Degrees: Tangent of 25° on the Unit Circle
- Tan 26 Degrees: Tangent of 26° on the Unit Circle
- Tan 27 Degrees: Tangent of 27° on the Unit Circle
- Tan 29 Degrees: Tangent of 29° on the Unit Circle
- Tan 30 Degrees: Tangent of 30° on the Unit Circle
- Tan 31 Degrees: Tangent of 31° on the Unit Circle
- Tan 32 Degrees: Tangent of 32° on the Unit Circle
- Tan 33 Degrees: Tangent of 33° on the Unit Circle
- Tan 34 Degrees: Tangent of 34° on the Unit Circle
- Tan 35 Degrees: Tangent of 35° on the Unit Circle
- Tan 36 Degrees: Tangent of 36° on the Unit Circle
- Tan 37 Degrees: Tangent of 37° on the Unit Circle
- Tan 38 Degrees: Tangent of 38° on the Unit Circle
- Тангенс 28 градусов (tg 28°) на единичной окружности
- Tangente de 28 grados (tan 28°) en el círculo unitario
- Tangente de 28 graus (tg 28°) no ciclo trigonométrico