Arctan of 1/5
Arcsin, Arccos, Arctan, Arccot
What is arctan(1/5)?
Answer
arctan(1/5) ≈
11.3099° ≈ 0.1974 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.
1/5 = 0.2.
arctan(1/5) is the angle α in (−90°, 90°) with tan α = 1/5.
tan 11.3099° ≈ 0.2000
α = arctan(1/5) ≈ 11.3099°
P ≈ (0.9806, 0.1961)
T(1, 1/5) is where line OP meets the line x = 1; highlighted: tan α = 1/5.
| Function | Degrees | Radians |
|---|---|---|
| arcsin(1/5) | ≈ 11.5370° | ≈ 0.2014 |
| arccos(1/5) | ≈ 78.4630° | ≈ 1.3694 |
| arctan(1/5) | ≈ 11.3099° | ≈ 0.1974 |
| arccot(1/5) | ≈ 78.6901° | ≈ 1.3734 |
Found an error in the calculation or the information?
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
Share This Calculation
Print
<a href="https://calculat.io/en/number/inverse-trigonometry/arctan--1-5">Arctan of 1/5 (Inverse Tangent) in Degrees and Radians</a>Facebook
Twitter
Telegram
WhatsApp
Viber
Email
Arctangent of nearby values
| x | arctan x |
|---|---|
| −0.3 | ≈ −16.6992° |
| 0 | 0° = 0 |
| 0.1 | ≈ 5.7106° |
| 1/5 | ≈ 11.3099° |
| 1/4 | ≈ 14.0362° |
| 0.3 | ≈ 16.6992° |
| 1/3 | ≈ 18.4349° |