Trigonometry
Inverse Hyperbolic Cosine
Inverse hyperbolic cosine of x.
Formula
Formula
acosh(x) = ln(x + √x2−1)
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| x | argument | x ≥ 1 | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenx = 2
Result1.316957897
Example 2
Givenx = 1
Result0