Tan 70 Degrees
Sin, Cos, Tan, Cot of an Angle
What is tan 70°?
Answer
tan 70° ≈
2.7475
Angle in radians: 70° = 7π/18. The point of the angle is in quadrant I, where tangent is positive.
≈ — rounded to 4 decimal places. tan 70° can't be written with square roots: 70° is not a multiple of 3°.
tan 70° = sin 70° / cos 70° ≈ 2.7475
P(cos 70°, sin 70°) ≈ (0.3420, 0.9397)
T(1, tan 70°) ≈ (1, 2.7475) — where line OP meets the line x = 1; T is beyond the drawing, the arrow points to it.
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 70°?
tan 70° ≈ 2.7475
Why does tan 70° 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°. 70° is not, so no such exact form exists; the value is used as a decimal: tan 70° ≈ 2.7475.
Why does a calculator show 1.2220 for tan 70?
The calculator is in radian mode (RAD): it takes tan 70 as the tangent of 70 radians, tan 70 rad ≈ 1.2220. Switch it to degrees (DEG): tan 70° ≈ 2.7475. 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 60 Degrees: Tangent of 60° on the Unit Circle
- Tan 61 Degrees: Tangent of 61° on the Unit Circle
- Tan 62 Degrees: Tangent of 62° on the Unit Circle
- Tan 63 Degrees: Tangent of 63° on the Unit Circle
- Tan 64 Degrees: Tangent of 64° on the Unit Circle
- Tan 65 Degrees: Tangent of 65° on the Unit Circle
- Tan 66 Degrees: Tangent of 66° on the Unit Circle
- Tan 67 Degrees: Tangent of 67° on the Unit Circle
- Tan 68 Degrees: Tangent of 68° on the Unit Circle
- Tan 69 Degrees: Tangent of 69° on the Unit Circle
- Tan 71 Degrees: Tangent of 71° on the Unit Circle
- Tan 72 Degrees: Tangent of 72° on the Unit Circle
- Tan 73 Degrees: Tangent of 73° on the Unit Circle
- Tan 74 Degrees: Tangent of 74° on the Unit Circle
- Tan 75 Degrees: Tangent of 75° on the Unit Circle
- Tan 76 Degrees: Tangent of 76° on the Unit Circle
- Tan 77 Degrees: Tangent of 77° on the Unit Circle
- Tan 78 Degrees: Tangent of 78° on the Unit Circle
- Tan 79 Degrees: Tangent of 79° on the Unit Circle
- Tan 80 Degrees: Tangent of 80° on the Unit Circle
- Тангенс 70 градусов (tg 70°) на единичной окружности
- Tangente de 70 grados (tan 70°) en el círculo unitario
- Tangente de 70 graus (tg 70°) no ciclo trigonométrico