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.

Cos

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

Cos( value )
cos( value )
Cos( value )
Cos( value )
Cos( value )

Description

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

Parameters

Parameter Type Definition and Requirements

value

Number

The Number whose cosine should be returned.

Returns

A Number which is the cosine of value.

Examples

The following query returns the cosine of 0.5:

client.query(
  q.Cos(0.5)
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))
0.8775825618903728
result = client.query(
  q.cos(0.5)
)
print(result)
0.8775825618903728
result, err := client.Query(
	f.Cos(0.5))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}
0.8775825618903728
try
{
    Value result = await client.Query(
        Cos(0.5)
    );

    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}
DoubleV(0.8775825618903728)
Cos(0.5)
0.8775825618903728
Query metrics:
  •    bytesIn:  11

  •   bytesOut:  31

  • computeOps:   1

  •    readOps:   0

  •   writeOps:   0

  •  readBytes:   0

  • writeBytes:   0

  •  queryTime: 3ms

  •    retries:   0

Is this article helpful? 

Tell Fauna how the article can be improved:
Visit Fauna's forums or email docs@fauna.com

Thank you for your feedback!