$tan (aggregation)

On this page

Behavior

Example

$tan

New in version 4.2.

Returns the tangent of a value that is measured in radians.

$tan has the following syntax:

{ $tan: <expression> }

$tan takes any valid expression that resolves to a number. If the expression returns a value in degrees, use the $degreesToRadians operator to convert the result to radians.

By default $tan returns values as a double. $tan can also return values as a 128-bit decimal as long as the <expression> resolves to a 128-bit decimal value.

For more information on expressions, see Expressions.

Behavior

`null`, `NaN`, and `+/- Infinity`

If the argument resolves to a value of null or refers to a field that is missing, $tan returns null. If the argument resolves to NaN, $tan returns NaN. If the argument resolves to negative or positive infinity, $tan throws an error.

Example

Results

{ $tan: NaN }

NaN

{ $tan: null }

null

{ $tan : Infinity}

{ $tan : -Infinity }

Throws an error message resembling the following formatted output:

"errmsg" :
  "Failed to optimize pipeline :: caused by :: cannot
  apply $tan to -inf, value must in (-inf,inf)"

Example

← $switch (aggregation)$tanh (aggregation) →

$tan (aggregation).css-134mg1q{-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;padding:0 10px;visibility:hidden;}.css-6vrlzm{border-radius:0!important;display:initial!important;margin:initial!important;}.css-1l4s55v{margin-top:-175px;position:absolute;padding-bottom:2px;}

Behavior

null, NaN, and +/- Infinity

Example

$tan (aggregation)

`null`, `NaN`, and `+/- Infinity`