SIN Function
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 Action

 Returns the sine of an angle given in radians.


 Syntax



  SIN( x)

 Remarks


 The argument  x can be of any numeric type.

 The sine of an angle in a right triangle is the ratio between the length of
 the side opposite the angle and the length of the hypotenuse.

  SIN is calculated in single precision if  x# is an integer or
 single-precision value. If you use any other numeric data type,  SIN is
 calculated in double precision.

 To convert values from degrees to radians, multiply the angle (in degrees)
 times --180 (or .0174532925199433). To convert a radian value to degrees,
 multiply it by 180-- (or 57.2957795130824). In both cases, - - 3.141593.



 See Also

  ATN,  COS,  TAN


 Example

 The following example plots the graph of the polar equation r = 1 + sin (n *
 -). This figure is sometimes known as a cardioid, owing to its resemblance
 to a heart when n equals 1.

 CLS


 CONST PI = 3.141593


 SCREEN 1 . COLOR 1,1 ' Medium resolution, blue background.


 WINDOW (-3,-2)-(3,2) ' Convert screen to Cartesian coordinates.


 INPUT "Number of petals = ", N


 CLS


 PSET (1,0) ' Set initial point.


 FOR Angle = 0 TO 2 * PI STEP .02


    R = 1 + SIN(N * Angle)  ' Polar equation for "flower."


    X = R * COS(Angle)' Convert polar coordinates to


    Y = R * SIN(Angle)' Cartesian coordinates.


    LINE -(X,Y)' Draw line from previous point to new point.


 NEXT


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