Arccos of 0.3
Arcsin, Arccos, Arctan, Arccot
What is arccos(0.3)?
Answer
arccos(0.3) ≈
72.5424° ≈ 1.2661 rad
Range: arccos x is an angle from 0° to 180°, so the answer is unique.
≈ — the value is not a table one; rounded to 4 decimal places.
arccos(0.3) is the angle α in [0°, 180°] with cos α = 0.3.
cos 72.5424° ≈ 0.3000
α = arccos(0.3) ≈ 72.5424°
P ≈ (0.3, 0.9539)
P lies on the line x = 0.3 in the upper half of the circle, where sin α ≥ 0; highlighted: cos α = 0.3.
| Function | Degrees | Radians |
|---|---|---|
| arcsin(0.3) | ≈ 17.4576° | ≈ 0.3047 |
| arccos(0.3) | ≈ 72.5424° | ≈ 1.2661 |
| arctan(0.3) | ≈ 16.6992° | ≈ 0.2915 |
| arccot(0.3) | ≈ 73.3008° | ≈ 1.2793 |
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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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<a href="https://calculat.io/en/number/inverse-trigonometry/arccos--0.3">Arccos of 0.3 (Inverse Cosine) in Degrees and Radians</a>Facebook
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![Arccos of 0.3 (Inverse Cosine) in Degrees and Radians. arccos(0.3) ≈ 72.5424° ≈ 1.2661 rad: the angle in [0°, 180°] whose cosine is 0.3. With the check and the unit circle.](https://calculat.io/en/number/inverse-trigonometry/arccos--0.3/generated.jpg)
Arccosine of nearby values
| x | arccos x |
|---|---|
| 0.14 | ≈ 81.9522° |
| 1/5 | ≈ 78.4630° |
| 1/4 | ≈ 75.5225° |
| 0.3 | ≈ 72.5424° |
| 1/3 | ≈ 70.5288° |
| 2/5 | ≈ 66.4218° |
| 1/2 | 60° = π/3 |