SQL/MySQL/Math/ATAN

Use and ATAN and ATAN2

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/* mysql> select ATAN(1, 2); +------------------+ | ATAN(1, 2) | +------------------+ | 0.46364760900081 | +------------------+ 1 row in set (0.00 sec) mysql> select ATAN2(1, 2); +------------------+ | ATAN2(1, 2) | +------------------+ | 0.46364760900081 | +------------------+ 1 row in set (0.00 sec)

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select ATAN(1, 2); select ATAN2(1, 2);

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Use ATAN

   <source lang="sql">

/* mysql> select ATAN( 0.45); +------------------+ | ATAN( 0.45) | +------------------+ | 0.42285392613294 | +------------------+ 1 row in set (0.00 sec)

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select ATAN( 0.45);

      </source>