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acos​

acos(
    @x ? ## required
) -> llll/null
note

acos is a built-in function in the bell programming language and is not unique or exclusive to bellplay~.

Returns the arc cosine value of @x.

Arguments​

  • @x [int/float/llll] Numeric llll.(required)

Output​

Arc cosine value of @x. [llll/null]

warning

acos will return null without raising an error if required arguments are not provided.