Inverse Cosine (arccos) Calculator
Result
Inverse Cosine (arccos) Calculator The Inverse Cosine (arccos) Calculator finds the angle whose cosine equals a value between -1 and 1, shown in both degrees and radians. The formula used is: arccos(x) = the angle θ such that cos(θ) = x, with the result i — free online calculator.
Formula
- Inverse Cosine (arccos) Calculator calculates its result from x. It uses the formula acos(x)*180/pi. Change any input to recalculate the result instantly.
- The main inputs are x. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Inverse Cosine (arccos)
- x: 0.5
Using x = 0.5, the calculated result is 60.
Sample result: Calculating…
Frequently asked questions
What does the Inverse Cosine (arccos) calculate?
Inverse Cosine (arccos) Calculator The Inverse Cosine (arccos) Calculator finds the angle whose cosine equals a value between -1 and 1, shown in both degrees and radians. The formula used is: arccos(x) = the angle θ such that cos(θ) = x, with the result i — free online calculator.
Which values should I enter?
Enter x using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: acos(x)*180/pi.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.