In Sage X3, you may come across various scenarios where you need to get the fins the inverse cosine of a specified number.
Sage X3 provides “ach” hyperbolic function which return the inverse hyperbolic cosine of a specified number.
Syntax :
ach(number)
Examples :

fig. ZRESULT code file
Output :
fig. Number value
Notes :
For real positive numbers, the hyperbolic cosine definition is as follows:
ach(x)=ln(x+sqr(x^2-1))
where ln is the natural logarithm and sqr the square root function. The type of result is Double.
Hope this helps!
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