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 |
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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 |
|---|---|
| 2 | ≈ 63.4349° |
| 5/2 | ≈ 68.1986° |
| 3 | ≈ 71.5651° |
| 4 | ≈ 75.9638° |
| 5 | ≈ 78.6901° |
| 6 | ≈ 80.5377° |
| 7 | ≈ 81.8699° |