cot1

This function is used to calculate the cotangent value of a, with input in radians.

cot1(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 or DECIMAL type.

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

The value 1.0000000000000002 is returned.

select cot1(pi()/4);

The value NULL is returned.

select cot1(null);

Parent topic: Mathematical Functions

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