# SIN¶

Returns the sine value of a numeric expression

## Syntax¶

```SIN( expr )
```

## Arguments¶

Parameter

Description

`expr`

Numeric expression representing an angle in radians

## Returns¶

Always returns a floating point result of the sine.

## Notes¶

• The result is in the range `[-1, 1]`.

• If the input value is NULL, the result is NULL.

## Examples¶

For these examples, consider the following table and contents:

```CREATE TABLE trig(f DOUBLE);

INSERT INTO trig VALUES (0), (PI()/12), (PI()/8), (PI()/6)
, (PI()/4), (PI()/3), (3*PI()/8), (5*PI()/12), (PI()/2);
```

### Sine of π/2 (= 1)¶

Tip

Use RADIANS to convert degrees to radians

```numbers=> SELECT SIN(PI()/2), SIN(RADIANS(90));
sin | sin0
----+-----
1 |    1
```

### Computing sine for a column, in radians¶

```numbers=> SELECT f, SIN(f) FROM trig;
f      | sin
-------+-------
0 |      0
0.2618 | 0.2588
0.3927 | 0.3827
0.5236 |    0.5
0.7854 | 0.7071
1.0472 |  0.866
1.1781 | 0.9239
1.309 | 0.9659
1.5708 |      1
```