inverse tan function

The syntax of a atan function function function: Returns the inverse tangent value. The tangent value is equal to the number parameter value because it is an angle. The returned angle value is expressed in radians, and the range is-PI/2 to PI/2.

ABS () Seek absolute value ACOs () Seeking the inverse cosine ASIN () Ask for the inverse of the string Atan () Ask for anyway cut ATAN2 () To find the tangent, to

PHP Math function Summary (classic worth collecting), PHP is worth collecting This paper summarizes and analyzes the mathematical operation function of PHP. Share to everyone for your reference, as follows: First, the common function

Name Abs Category Mathematical functions Prototype Abs (number) Parameters Must be selected. The number argument is a valid numeric expression of any type "Return value" Type of same number "Exception/Error" No Description Returns the absolute value

1. Coordinate system:Flash coordinate system and mathematical coordinate system: the X axis is the same, and the y axis is the opposite.[Mathematical coordinate system][Coordinate system in Flash]2. Conversion between Angle and Radian:(1) radians:

This paper summarizes and analyzes the PHP mathematical operation function. Share to everyone for your reference, specific as follows: First, the commonly used function description: Abs: Get absolute value. Acos: Gets the inverse cosine value.

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This article collects 10 article 1 about the PHP atan () function. PHP Math function Large Summary classic worth of HTML call PHP function Excel function Two brief introduction: PHP, Function: PHP math function Summary Classic is worth collecting:

constants, operators, and functions Digital Gnuplot that numbers can be divided into integers, real numbers and complex numbers: Integer: Gnuplot is the same as the C language, with 4 byte stored integers. It can represent an integer between 2147483

1. ABS (x): Returns the absolute value of XMysql> Select ABS (1), ABS ( -1), ABS (0);+--------+---------+--------+| ABS (1) | ABS (-1) | ABS (0) |+--------+---------+--------+|       1 |      1 | 0 |+--------+---------+--------+2. Pi (): Return