PHP – tan() Function
The PHP tan() function returns the tangent of a number.
PHP – tanh() Function
The PHP tanh() function returns the hyperbolic tangent of a number, which is equal to sinh(x)/cosh(x).
SQL – MySQL ACOS() Function
The MySQL ACOS() function returns the arc cosine of a number. The specified number must be between -1 and 1, or NULL will be returned.
SQL – MySQL ASIN() Function
The MySQL ASIN() function returns the arc sine of a number. The specified number must be between -1 and 1, or NULL will be returned.
SQL – MySQL ATAN() Function
The MySQL ATAN() function returns the arc tangent of one or two numbers.
SQL – MySQL AVG() Function
The MySQL AVG() function returns the average value of an expression (NULL values are ignored).
SQL – MySQL COUNT() Function
The MySQL COUNT() function returns the number of records returned by a select query. NULL values are not counted.
SQL – MySQL EXP() Function
The MySQL EXP() function returns the natural logarithm e (2.718281…) raised to the power of the specified number.
SQL – MySQL LN() Function
The MySQL LN() function returns the natural logarithm of a number (greater than 0).
SQL – MySQL LOG() Function
The MySQL LOG() function returns the natural logarithm of a specified number, or the logarithm of the number to the specified base.
SQL – MySQL LOG2() Function
The MySQL LOG2() function returns the natural logarithm of a number greater than 0 to base 2.
SQL – MySQL LOG10() Function
The MySQL LOG10() function returns the natural logarithm of a number greater than 0 to base 10.
SQL – MySQL MOD() Function
The MySQL MOD() function returns the remainder of a number divided by another number.
SQL – MySQL POW() Function
The MySQL POW() function returns the value of a number raised to the power of another number.