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https://issues.apache.org/jira/browse/CALCITE-5599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17703310#comment-17703310
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Tanner Clary commented on CALCITE-5599:
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I would be open to helping with this or participating in any reviews if you
need. I've worked on some of the other math functions.
> Support more trigonometric functions for BigQuery
> -------------------------------------------------
>
> Key: CALCITE-5599
> URL: https://issues.apache.org/jira/browse/CALCITE-5599
> Project: Calcite
> Issue Type: New Feature
> Reporter: Zou
> Assignee: Zou
> Priority: Major
>
> We have already supported many trigonometric functions in calcite, such as
> SIN, COS, and there are still some trigonometric functions in BigQuery not
> supported：
> * ACOSH(X)：Computes the inverse hyperbolic cosine of X.
> * COTH(X): Computes the hyperbolic cotangent for the angle of {{{}X{}}},
> where {{X}} is specified in radians.
> * CSC(X): Computes the cosecant of the input angle, which is in radians.
> * CSCH(X): Computes the hyperbolic cosecant of the input angle, which is in
> radians.
> * SEC(X): Computes the secant for the angle of {{{}X{}}}, where {{X}} is
> specified in radians.
> * SECH(X): Computes the hyperbolic secant for the angle of {{{}X{}}}, where
> {{X}} is specified in radians.
> More info could be found in [BigQuery
> Doc|https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#acosh]
> This is an umbrella issue, and I will create subtasks for each function
> listed above later.
>
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