BB___ACS

=ACS= toc

Description
> This function returns the arc cosine of the given number or expression. > The result is expressed in **radians**. > The opposite is the COS function.

Syntax

 * 1) ACS(//Number//)

Hints

 * 1) arc cosine of (-1) happens to be Pi (3.14159....). Hence useful functions.
 * 2) ACS(//Number//) defined only for -1<=//Number//<=1 (otherwise, you'll get "out of range" error).
 * 3) Most mathematical operations in Just BASIC can be performed on Literal Numbers, Numeric Variables, or Numeric Expressions that consist of Literal Numbers, Numeric Variables, or both.
 * 4) There are 2 * pi radians in a full circle of 360 degrees. A formula to convert degrees to radians is: radians = degrees divided by 57.29577951.

Example
code format="lb" Print ACS(1) Print ACS(0.5) Print ACS(-0.2) Print ACS(-1/2) End code

Calculating PI
code format="lb" function Pi Pi= acs(-1) end function code

Converting Degrees to Radians
code format="lb" function deg2rad(angle) 'degrees to radians deg2rad = angle*acs(-1)/180    'angle*Pi/180 end function code

Converting Radians to Degrees
code format="lb" function rad2deg(angle) 'radians to degrees rad2deg = angle*180/acs(-1)    'angle*180/Pi end function code