how to use inverse tan

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.

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:

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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

Githttps://github.com/sea-boat/mysql-protocol Overview Server Status identification. More details: Https://dev.mysql.com/doc/internals/en/status-flags.htmlServerStatus class Package com.seaboat.mysql.protocol.constant;/** * * server status. *

1. Mathematical FunctionsMathematical functions are mainly used to deal with numerical data, the main mathematical functions are: absolute value function, trigonometric function (including sine function, tangent function, cotangent function, etc.),

Single-record functions in SQL 1.ASCII returns the decimal number corresponding to the specified character; Sql> Select ASCII (' a ') a,ascii (' A ') a,ascii (' 0 ') zero,ascii (') space from dual; A A ZERO space --------- --------- --------- ---

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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