acos

kotlin-stdlib / kotlin.math / acos
Platform and version requirements: JVM (1.2), JS (1.2), Native (1.2) 
fun acos(x: Double): Double
fun acos(x: Float): Float

Computes the arc cosine of the value x; the returned value is an angle in the range from 0.0 to PI radians.

Special cases: - acos(x) is NaN, when abs(x) > 1 or x is NaN

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.math/acos.html