Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/17865#discussion_r123962284
--- Diff: R/pkg/R/functions.R ---
@@ -426,7 +426,7 @@ setMethod("covar_pop", signature(col1 =
"characterOrColumn", col2 = "characterOr
#' cos
#'
-#' Computes the cosine of the given value.
+#' Computes the cosine of the given value. Units in radians.
--- End diff --
BTW, just while you are here @felixcheung, does this change itself look
okay to you?
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