Tan 25 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 25°?
Answer
tan 25° ≈
0.4663
Angle in radians: 25° = 5π/36. The point of the angle is in quadrant I, where tangent is positive.
≈ — rounded to 4 decimal places. tan 25° can't be written with square roots: 25° is not a multiple of 3°.
tan 25° = sin 25° / cos 25° ≈ 0.4663
P(cos 25°, sin 25°) ≈ (0.9063, 0.4226)
T(1, tan 25°) ≈ (1, 0.4663) — 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 25°?
tan 25° ≈ 0.4663
Why does tan 25° 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°. 25° is not, so no such exact form exists; the value is used as a decimal: tan 25° ≈ 0.4663.
Why does a calculator show −0.1335 for tan 25?
The calculator is in radian mode (RAD): it takes tan 25 as the tangent of 25 radians, tan 25 rad ≈ −0.1335. Switch it to degrees (DEG): tan 25° ≈ 0.4663. 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 15 Degrees: Tangent of 15° on the Unit Circle
- Tan 16 Degrees: Tangent of 16° on the Unit Circle
- Tan 17 Degrees: Tangent of 17° on the Unit Circle
- 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 26 Degrees: Tangent of 26° on the Unit Circle
- Tan 27 Degrees: Tangent of 27° on the Unit Circle
- Tan 28 Degrees: Tangent of 28° 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
- Тангенс 25 градусов (tg 25°) на единичной окружности
- Tangente de 25 grados (tan 25°) en el círculo unitario
- Tangente de 25 graus (tg 25°) no ciclo trigonométrico