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ACOS

A function that returns the angle, in radians, whose cosine is the specified float expression. This is also called arccosine.

Syntax

ACOS ( numeric_expression )

Arguments

numeric_expression
An expression of either type float or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. Values outside this range return NULL.

Return Type

Returns values of type FLOAT64.

Examples

Examples in this section use the example blockchain.

This example shows the results of using the ACOS function.

SELECT ACOS(real) FROM example;

Response:

ACOS(real) [FLOAT64]
NULL
1.57079632679
0
NULL