Arctan of 2
Arcsin, Arccos, Arctan, Arccot
What is arctan(2)?
Answer
arctan(2) ≈
63.4349° ≈ 1.1071 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(2) is the angle α in (−90°, 90°) with tan α = 2.
tan 63.4349° ≈ 2.0000
α = arctan(2) ≈ 63.4349°
P ≈ (0.4472, 0.8944)
T(1, 2) is where line OP meets the line x = 1; highlighted: tan α = 2.
| Function | Degrees | Radians |
|---|---|---|
| arcsin(2) | does not exist | — |
| arccos(2) | does not exist | — |
| arctan(2) | ≈ 63.4349° | ≈ 1.1071 |
| arccot(2) | ≈ 26.5651° | ≈ 0.4636 |
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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
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Arctangent of nearby values
| x | arctan x |
|---|---|
| 3/2 | ≈ 56.3099° |
| 5/3 | ≈ 59.0362° |
| √3 | 60° = π/3 |
| 2 | ≈ 63.4349° |
| 5/2 | ≈ 68.1986° |
| 3 | ≈ 71.5651° |
| 4 | ≈ 75.9638° |