Arctan of 4
Arcsin, Arccos, Arctan, Arccot
What is arctan(4)?
Answer
arctan(4) ≈
75.9638° ≈ 1.3258 rad
Range: arctan x is an angle strictly between −90° and 90°, so the answer is unique.
≈ — the value is not a table one; rounded to 4 decimal places.
arctan(4) is the angle α in (−90°, 90°) with tan α = 4.
tan 75.9638° ≈ 4.0000
α = arctan(4) ≈ 75.9638°
P ≈ (0.2425, 0.9701)
T(1, 4) is where line OP meets the line x = 1, beyond the drawing (the arrow points to it); highlighted: tan α = 4.
| Function | Degrees | Radians |
|---|---|---|
| arcsin(4) | does not exist | — |
| arccos(4) | does not exist | — |
| arctan(4) | ≈ 75.9638° | ≈ 1.3258 |
| arccot(4) | ≈ 14.0362° | ≈ 0.2450 |
See Also
- Sin, Cos, Tan, Cot of an Angle - Exact value in square roots and the decimal, with reduction to an acute angle on 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
Arctangent of nearby values
| x | arctan x |
|---|---|
| 2 | ≈ 63.4349° |
| 5/2 | ≈ 68.1986° |
| 3 | ≈ 71.5651° |
| 4 | ≈ 75.9638° |
| 5 | ≈ 78.6901° |
| 6 | ≈ 80.5377° |
| 7 | ≈ 81.8699° |
FAQ
What is arctan(4)?
arctan(4) ≈ 75.9638° ≈ 1.3258 rad
How to convert arctan(4) to radians?
Multiply the angle in degrees by π/180: 75.9638° × π/180 ≈ 1.3258 rad.
Why does a calculator show 1.3258 for arctan(4)?
The calculator is in radian mode (RAD) and gives the angle in radians: arctan(4) ≈ 1.3258 rad. In degrees (DEG) it is ≈ 75.9638°.
See Also
- Arctan of 1/3 (Inverse Tangent) in Degrees and Radians
- Arctan of 1/4 (Inverse Tangent) in Degrees and Radians
- Arctan of 1/5 (Inverse Tangent) in Degrees and Radians
- Arctan of 2 (Inverse Tangent) in Degrees and Radians
- Arctan of 2/3 (Inverse Tangent) in Degrees and Radians
- Arctan of 2/5 (Inverse Tangent) in Degrees and Radians
- Arctan of 3 (Inverse Tangent) in Degrees and Radians
- Arctan of 3/2 (Inverse Tangent) in Degrees and Radians
- Arctan of 3/4 (Inverse Tangent) in Degrees and Radians
- Arctan of 3/5 (Inverse Tangent) in Degrees and Radians
- Arctan of 4/5 (Inverse Tangent) in Degrees and Radians
- Arctan of 5 (Inverse Tangent) in Degrees and Radians
- Arctan of 5/2 (Inverse Tangent) in Degrees and Radians
- Arctan of 5/3 (Inverse Tangent) in Degrees and Radians
- Arctan of 5/6 (Inverse Tangent) in Degrees and Radians
- Arctan of 6 (Inverse Tangent) in Degrees and Radians
- Arctan of 7 (Inverse Tangent) in Degrees and Radians
- Arctan of 10 (Inverse Tangent) in Degrees and Radians
- Arctan of 20 (Inverse Tangent) in Degrees and Radians
- Arctan of 30 (Inverse Tangent) in Degrees and Radians
- Арктангенс 4 (arctg 4) в градусах и радианах
- Arcotangente de 4 (arctan 4) en grados y radianes
- Arco tangente de 4 (arctg 4) em graus e radianos