Navigation: Realtest Script Language > Syntax Element Details > ArcCos Category General-Purpose Functions Description Determines which angle has the specified Cosine Syntax ArcCos(value) Parameters value - a cosine in the range of -1 to 1. Notes The return value is expressed in degrees (0 to 180). To convert degrees to radians, divide by 57.2957795131. Example Degrees: ArcCos(0.5) Returns 60. All trig functions work in degrees. Copyright © 2020-2026 Systematic Solutions, LLC