In PostgreSQL, cosd() is a mathematical function that returns the trigonometric cosine of the specified angle, as measured in degrees.
You specify the angle by providing an argument to the function when calling it.
mathematical functions
How Acos() Works in PostgreSQL
In PostgreSQL, acos() is a mathematical function that returns the inverse cosine of the specified expression, measured in radians.
The inverse cosine is also known as the arccosine.
How Acosd() Works in PostgreSQL
In PostgreSQL, acosd() is a mathematical function that returns the inverse cosine of the specified expression, measured in degrees.
The inverse cosine is also known as the arccosine.
How Log() Works in PostgreSQL
In PostgreSQL, log() is a mathematical function that returns the base 10 logarithm of its argument.
However, it also allows you to optionally specify a base with which to use.
How the Ln() Function Works in PostgreSQL
In PostgreSQL, ln() is a mathematical function that returns the natural logarithm of its argument.
How the Exp() Function Works in PostgreSQL
In PostgreSQL, exp() is a mathematical function that returns the exponential value of its argument.
How Pi() Works in PostgreSQL
In PostgreSQL, the pi() function returns the number π.
π constant is a mathematical constant. It is defined as the ratio of a circle’s circumference to its diameter.
How the Degrees() Function Works in PostgreSQL
In PostgreSQL, the degrees() function converts from radians to degrees.
The radian is the SI (International System of Units) unit for measuring angles. One radian is just under 57.3 degrees, and a full circle has just over 6.28 radians (2π).
How the Radians() Function Works in PostgreSQL
In PostgreSQL, the radians() function converts from degrees to radians.
The radian is the SI (International System of Units) unit for measuring angles. One radian is just under 57.3 degrees, and a full circle has just over 6.28 radians (2π).
How Trunc() Works in PostgreSQL
In PostgreSQL, the trunc() function truncates a number.
More specifically, it truncates the number either toward zero, or to a specific number of decimal places.