cos 180

Feather painting by action Code: OnMouseDown = init; function init () {// create a feather, and set each feather parameter and call the function feather = createEmptyMovieClip ("f" + I, 10000 + I ++); feather. swapDepths (Math. random () * 10000);

[Plain]/* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)* Copyright and version Declaration of the program* All rights

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

The use of Cos function function function: Returns the cosine of the given angle. This is consistent with the knowledge of mathematics. function syntax: COS (number) Number is the angle to which the cosine is required, expressed in radians.

Cos function Returns the cosine of a corner. Cos(number) The number argument can be any valid numeric expression that represents a corner as radians. Description The Cos function takes a corner and returns the ratio on both sides of the

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

CREATE DEFINER=`root`@`%` FUNCTION `f_getdistance`(in_from_x decimal(10,3), in_from_y decimal(10,3),in_to_x decimal(10,3),in_to_y decimal(10,3)) RETURNS decimal(20,10)BEGINdeclare line LineString;#select CONCAT('LineString(',in_from_x,' ',in_from_y,'

1. formula: abs (number) indicates the absolute number of abs (number) returned. For example: abs (5) return 5abs (-5) return 52, formula: ceil (number) that is, ceil (number) return a number based on the input, the input parameter can be a

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:

How to sort complicated PHP queries. $ Latitude =$ _ GET ['Y']; $ Longpolling = $ _ GET ['x']; $ Distance = 500; $ SQL = "select * from ". $ GLOBALS ['ecs']-> table ('weixin _ map '). "where sqrt ((((". $ longpolling. "-longpolling) * PI () * 12656 *