kotlin-stdlib / kotlin.math / cos cos Common JVM JS Native 1.2 fun cos ( x : Double ) : Double (Common source) (JVM source) (JS source) (Native source) fun cos ( x : Float ) : Float (Common source) (JVM source) (JS source) (Native source) Computes the cosine of the angle x given in radians. Special cases: cos(NaN|+Inf|-Inf) is NaN