Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/20618#discussion_r168670009 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala --- @@ -196,7 +208,13 @@ case class Asin(child: Expression) extends UnaryMathExpression(math.asin, "ASIN" // scalastyle:off line.size.limit @ExpressionDescription( - usage = "_FUNC_(expr) - Returns the inverse tangent (a.k.a. arctangent).", + usage = "_FUNC_(expr) - Returns the inverse tangent (a.k.a. arc tangent) of `expr`, " + + "as if computed by `java.lang.Math._FUNC_`.", + arguments = --- End diff -- Could we just save one line and stick to the same indentation? ```scala arguments = """ Arguments: * expr - number whose arc tangent is to be returned. """, examples = """ ... ```
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