FQL v4 will be decommissioned on June 30, 2025. Ensure that you complete your migration from FQL v4 to FQL v10 by that date.

For more details, see the v4 EOL announcement and migration guide. Contact support@fauna.com with any questions.

Acos

This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics.

Acos( value )
acos( value )
Acos( value )
Acos( value )
Acos( value )

Description

The Acos function is a trigonometric function which calculates ratios of the lengths of the sides of right triangles. Acos returns the arc cosine of a number.

Parameters

Parameter Type Definition and Requirements

value

Number

The Number whose arc cosine should be returned.

Returns

A Number which is the arc cosine of value.

Examples

The following query returns the arc cosine of 0.5:

client.query(
  q.Acos(0.5)
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))
1.0471975511965979
result = client.query(
  q.acos(0.5)
)
print(result)
1.0471975511965979
result, err := client.Query(
	f.Acos(0.5))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}
1.0471975511965979
try
{
    Value result = await client.Query(
        Acos(0.5)
    );

    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}
DoubleV(1.0471975511965979)
Acos(0.5)
1.0471975511965979
Query metrics:
  •    bytesIn:  12

  •   bytesOut:  31

  • computeOps:   1

  •    readOps:   0

  •   writeOps:   0

  •  readBytes:   0

  • writeBytes:   0

  •  queryTime: 1ms

  •    retries:   0

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