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SQL ATAN() Function Example | atan() in SQL

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SQL ATAN() is an inbuilt function that is used for finding the arctangent of a number, i.e., it returns angle, in radians, whose tangent is a specified float expression. The SQL ATAN() function returns the arctangent of a value. In other words, it returns the angle, in radians, whose tangent is a specified float expression.

SQL ATAN()

SQL ATAN() function returns the arctangent of a number.

Syntax

SELECT ATAN (Expression);

OR

SELECT ATAN (A, B);

Parameters

  1. Float_expression: An expression of float or any other type which is implicitly converted to float whose arc tangent value is to be retrieved.
  2. A, B: Two values whose arctangent value is to be calculated.

Examples

Query 1

SELECT ATAN (2.5);

Output

1.1902899496825317

Explanation

Here, the arctangent value is returned.

Query 2

SELECT ATAN (1.3)

Output

0.91510070055336

Explanation

Here, the arctangent value is returned.

Query 3

SELECT ATAN (-1.3);

Output

-0.91510070055336

Explanation

Here, arctangent value is returned which is negative.

Query 4

SELECT ATAN (2.5 + 0.3);

Output

1.22777238637419

Explanation

Here, the arc tangent value of the expression is returned.

Query 5

SELECT ATAN (NULL);

Output

NULL

Explanation

Passing of NULL value as an argument will return a NULL value.

See also

SQL ASIN()

SQL ROUND()

SQL ACOS()

SQL ABS()

SQL SIN()

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