sin

This function is used to return the sine value of a, with input in radians.

sin(DOUBLE a)

**Table 1** Parameter
Parameter	Mandatory	Type	Description
a	Yes	DOUBLE, BIGINT, DECIMAL, or STRING	The value can be a float, integer, or string. If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.

The return value is of the DOUBLE type.

If the value of a is NULL, NULL is returned.

The value 1 is returned.

select sin(pi()/2);

The value NULL is returned.

select sin(null);

Parent topic: Mathematical Functions

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