Tan 38 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 38°?
Answer
tan 38° ≈
0.7813
Angle in radians: 38° = 19π/90. The point of the angle is in quadrant I, where tangent is positive.
≈ — rounded to 4 decimal places. tan 38° can't be written with square roots: 38° is not a multiple of 3°.
tan 38° = sin 38° / cos 38° ≈ 0.7813
P(cos 38°, sin 38°) ≈ (0.7880, 0.6157)
T(1, tan 38°) ≈ (1, 0.7813) — 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 38°?
tan 38° ≈ 0.7813
Why does tan 38° 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°. 38° is not, so no such exact form exists; the value is used as a decimal: tan 38° ≈ 0.7813.
Why does a calculator show 0.3103 for tan 38?
The calculator is in radian mode (RAD): it takes tan 38 as the tangent of 38 radians, tan 38 rad ≈ 0.3103. Switch it to degrees (DEG): tan 38° ≈ 0.7813. 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 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
- Tan 36 Degrees: Tangent of 36° on the Unit Circle
- Tan 37 Degrees: Tangent of 37° on the Unit Circle
- Tan 39 Degrees: Tangent of 39° on the Unit Circle
- Tan 40 Degrees: Tangent of 40° on the Unit Circle
- Tan 41 Degrees: Tangent of 41° on the Unit Circle
- Tan 42 Degrees: Tangent of 42° on the Unit Circle
- Tan 43 Degrees: Tangent of 43° on the Unit Circle
- Tan 44 Degrees: Tangent of 44° on the Unit Circle
- Tan 45 Degrees: Tangent of 45° on the Unit Circle
- Tan 46 Degrees: Tangent of 46° on the Unit Circle
- Tan 47 Degrees: Tangent of 47° on the Unit Circle
- Tan 48 Degrees: Tangent of 48° on the Unit Circle
- Тангенс 38 градусов (tg 38°) на единичной окружности
- Tangente de 38 grados (tan 38°) en el círculo unitario
- Tangente de 38 graus (tg 38°) no ciclo trigonométrico