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https://issues.apache.org/jira/browse/CALCITE-6472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17866574#comment-17866574
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xiong duan commented on CALCITE-6472:
-------------------------------------
According to
[PostgreSQL-functions-math|https://www.postgresql.org/docs/16/functions-math.html].
How about we use "Trigonometric Functions"?
> Add degree based trig functions to PostgreSQL function library
> --------------------------------------------------------------
>
> Key: CALCITE-6472
> URL: https://issues.apache.org/jira/browse/CALCITE-6472
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Norman Jordan
> Assignee: Norman Jordan
> Priority: Minor
> Labels: pull-request-available
>
> PostgreSQL supports the following trigonometric functions that are degree
> based.
> * COSD
> * SIND
> * TAND
> * ACOSD
> * ASIND
> * ATAND
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