Arctan of 2/3
Arcsin, Arccos, Arctan, Arccot
What is arctan(2/3)?
Answer
arctan(2/3) ≈
33.6901° ≈ 0.5880 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(2/3) is the angle α in (−90°, 90°) with tan α = 2/3.
tan 33.6901° ≈ 0.6667
α = arctan(2/3) ≈ 33.6901°
P ≈ (0.8321, 0.5547)
T(1, 2/3) is where line OP meets the line x = 1; highlighted: tan α = 2/3.
| Function | Degrees | Radians |
|---|---|---|
| arcsin(2/3) | ≈ 41.8103° | ≈ 0.7297 |
| arccos(2/3) | ≈ 48.1897° | ≈ 0.8411 |
| arctan(2/3) | ≈ 33.6901° | ≈ 0.5880 |
| arccot(2/3) | ≈ 56.3099° | ≈ 0.9828 |
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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 |
|---|---|
| 1/2 | ≈ 26.5651° |
| √3/3 | 30° = π/6 |
| 3/5 | ≈ 30.9638° |
| 2/3 | ≈ 33.6901° |
| 0.7 | ≈ 34.9920° |
| 3/4 | ≈ 36.8699° |
| 4/5 | ≈ 38.6598° |