radians

radians is useful as a preprocessing step before calling trigonometric functions such as sin, cos, or tan, which all expect their input in radians. If you have angle data in degrees, pass it through radians before applying any trigonometric operation.

Usage#

Syntax#

radians(a)

Parameters#

Name	Type	Required	Description
`a`	real	Yes	The angle in degrees to convert.

Returns#

The angle in radians corresponding to the input degree value.

Example#

Use radians to convert an angle in degrees to radians.

Query

print result = radians(180)

Run in Playground

Output

result
3.1416

degrees: Converts radians to degrees. Use it for the inverse conversion after trigonometric computations.
pi: Returns the constant π. Use it when you want to compute radian conversions manually instead of using radians.
sin: Returns the sine of an angle in radians. Use radians to prepare degree inputs before calling sin.
cos: Returns the cosine of an angle in radians. Use radians to prepare degree inputs before calling cos.
tan: Returns the tangent of an angle in radians. Use radians to prepare degree inputs before calling tan.

Other query languages#

Splunk SPL users

Splunk SPL doesn't include a built-in radians() function. You compute the conversion manually by multiplying the degree value by pi() / 180.

Splunk example

| eval angle_rad = angle_deg * (pi() / 180)

APL equivalent

['sample-http-logs']
| extend angle_rad = radians(angle_deg)

ANSI SQL users

In SQL Server and PostgreSQL, RADIANS() is a built-in function with identical semantics to the APL version.

SQL example

SELECT RADIANS(angle_deg) AS angle_rad FROM logs