COT

COT(expr)

Description

The COT function is used to calculate the cotangent value of a given angle, i.e., cotangent. Cotangent is the reciprocal of tangent, i.e., cot(x) = 1/tan(x). This function has a wide range of applications in trigonometric calculations.

Parameter Description

• expr (type double): The angle for which the cotangent value needs to be calculated, in radians.

Return Result

The return type is double, representing the cotangent value of the given angle.

Usage Example

1. Calculate the cotangent value of 1 radian:

SELECT COT(1);

Results:

0.6420926159343306

2. Calculate the cotangent value of π/4 (45°):

SELECT COT(PI()/4);

Results:

1.0000000000000002

3. Calculate the cotangent value of 0 radians:

SELECT COT(0);

Results:

Infinity

4. Calculate the cotangent value of -π/2 (-90°):

SELECT COT(-PI()/2);

Results:

-6.123233995736766E-17

Notes

• When the given angle is 0 or π (180°), the COT function will return infinity because the value of the tangent function is undefined at these angles.
• When the given angle is an integer multiple of π (180°), the COT function will return 0 because the value of the tangent function is 0 at these angles.