{"id":55,"date":"2019-08-30T18:22:10","date_gmt":"2019-08-30T18:22:10","guid":{"rendered":"https:\/\/tutorialio.com\/?p=55"},"modified":"2019-08-30T18:22:10","modified_gmt":"2019-08-30T18:22:10","slug":"trigonometric-functions-in-php","status":"publish","type":"post","link":"https:\/\/hellonitish.com\/blog\/trigonometric-functions-in-php\/","title":{"rendered":"Trigonometric Functions in PHP"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Trigonometric Functions in PHP<\/caption>\n
Function Name<\/th>\nFunction Description<\/th>\n<\/tr>\n
sin()<\/a><\/td>\nSine<\/td>\n<\/tr>\n
cos()<\/a><\/td>\nCosine<\/td>\n<\/tr>\n
tan()<\/a><\/td>\nTangent<\/td>\n<\/tr>\n
asin()<\/a><\/td>\nArc sine<\/td>\n<\/tr>\n
acos()<\/a><\/td>\nArc cosine<\/td>\n<\/tr>\n
atan()<\/a><\/td>\nArc tangent<\/td>\n<\/tr>\n
atan2()<\/a><\/td>\nArc tangent of two variables<\/td>\n<\/tr>\n
asinh()<\/a><\/td>\nInverse hyperbolic sine<\/td>\n<\/tr>\n
acosh()<\/a><\/td>\nInverse hyperbolic cosine<\/td>\n<\/tr>\n
atanh()<\/a><\/td>\nInverse hyperbolic tangent<\/td>\n<\/tr>\n
deg2rad()<\/a><\/td>\nConverts the number in degrees to the radian equivalent<\/td>\n<\/tr>\n
rad2deg()<\/a><\/td>\nConverts the radian number to the equivalent number in degrees<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

PHP sin()<\/code> Function<\/h2>\n

PHP sin()<\/code> Usage<\/h3>\n

The PHP sin()<\/code><\/code> function will give you the sine of the arg<\/code> parameter. The arg<\/code> parameter is in radians.<\/p>\n

PHP sin()<\/code> Syntax<\/h3>\n
 sin (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
PHP sin()<\/code> Parameters<\/h3>\n
    \n
  1. \n
    arg<\/code> \u2014 A value in radians <\/p>\n<\/li>\n<\/ol>\n
    PHP sin()<\/code> Return Value<\/h3>\n
    The PHP sin()<\/code> function returns the sine of arg<\/code><\/p>\n
    PHP sin()<\/code> Working Examples<\/h3>\n
    1. sin() example<\/h4>\n
    <?php<\/span>\n\/\/ Precision depends on your precision directive<\/span>\necho<\/span> sin<\/span>(<\/span>deg2rad<\/span>(<\/span>60<\/span>)<\/span>)<\/span>;<\/span>  \/\/  0.866025403 ...<\/span>\necho<\/span> sin<\/span>(<\/span>60<\/span>)<\/span>;<\/span>           \/\/ -0.304810621 ...<\/span>\n?><\/span><\/span><\/code><\/pre>\n
    PHP cos()<\/code> Function<\/h2>\n
    PHP cos()<\/code> Usage<\/h3>\n
    The PHP cos()<\/code><\/code> function will give you the cosine of the arg<\/code> parameter. The arg<\/code> parameter is in radians.<\/p>\n
    PHP cos()<\/code> Syntax<\/h3>\n
     cos (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
    PHP cos()<\/code> Parameters<\/h3>\n
      \n
    1. \n
      arg<\/code> \u2014 An angle in radians <\/p>\n<\/li>\n<\/ol>\n
      PHP cos()<\/code> Return Value<\/h3>\n
      The PHP cos()<\/code> function returns the cosine of arg<\/code><\/p>\n
      PHP cos()<\/code> Working Examples<\/h3>\n
      1. cos() example<\/h4>\n
      <?php<\/span>\necho<\/span> cos<\/span>(<\/span>M_PI<\/span>)<\/span>;<\/span> \/\/ -1<\/span>\n?><\/span><\/span><\/code><\/pre>\n
      PHP tan()<\/code> Function<\/h2>\n
      PHP tan()<\/code> Usage<\/h3>\n
      The PHP tan()<\/code><\/code> function will give you the tangent of the arg<\/code> parameter. The arg<\/code> parameter is in radians.<\/p>\n
      PHP tan()<\/code> Syntax<\/h3>\n
       tan (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
      PHP tan()<\/code> Parameters<\/h3>\n
        \n
      1. \n
        arg<\/code> \u2014 The argument to process in radians <\/p>\n<\/li>\n<\/ol>\n
        PHP tan()<\/code> Return Value<\/h3>\n
        The PHP tan()<\/code> function returns the tangent of arg<\/code><\/p>\n
        PHP tan()<\/code> Working Examples<\/h3>\n
        1. tan() example<\/h4>\n
        <?php<\/span>\necho<\/span> tan<\/span>(<\/span>M_PI_4<\/span>)<\/span>;<\/span> \/\/ 1<\/span>\n?><\/span><\/span><\/code><\/pre>\n
        PHP asin()<\/code> Function<\/h2>\n
        PHP asin()<\/code> Usage<\/h3>\n
        The PHP asin()<\/code><\/code> function will give you the arc sine of arg<\/code> in radians. asin()<\/code> is the inverse function of sin()<\/code>, which means that a==sin(asin(a))<\/strong> for every value of a that is within asin()<\/code>‘s range.<\/p>\n
        PHP asin()<\/code> Syntax<\/h3>\n
         asin (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
        PHP asin()<\/code> Parameters<\/h3>\n
          \n
        1. \n
          arg<\/code> \u2014 The argument to process <\/p>\n<\/li>\n<\/ol>\n
          PHP asin()<\/code> Return Value<\/h3>\n
          The PHP asin()<\/code> function returns the arc sine of arg<\/code> in radians<\/p>\n
          PHP acos()<\/code> Function<\/h2>\n
          PHP acos()<\/code> Usage<\/h3>\n
          The PHP acos()<\/code><\/code> function will give you the arc cosine of arg<\/code> in radians. acos()<\/code> is the inverse function of cos()<\/code>, which means that a==cos(acos(a))<\/strong> for every value of a that is within acos()<\/code>‘ range.<\/p>\n
          PHP acos()<\/code> Syntax<\/h3>\n
           acos (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
          PHP acos()<\/code> Parameters<\/h3>\n
            \n
          1. \n
            arg<\/code> \u2014 The argument to process <\/p>\n<\/li>\n<\/ol>\n
            PHP acos()<\/code> Return Value<\/h3>\n
            The PHP acos()<\/code> function returns the arc cosine of arg<\/code> in radians.<\/p>\n
            PHP atan()<\/code> Function<\/h2>\n
            PHP atan()<\/code> Usage<\/h3>\n
            The PHP atan()<\/code><\/code> function will give you the arc tangent of arg<\/code> in radians. atan()<\/code> is the inverse function of tan()<\/code>, which means that a==tan(atan(a))<\/strong> for every value of a that is within atan()<\/code>‘s range.<\/p>\n
            PHP atan()<\/code> Syntax<\/h3>\n
             atan (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
            PHP atan()<\/code> Parameters<\/h3>\n
              \n
            1. \n
              arg<\/code> \u2014 The argument to process <\/p>\n<\/li>\n<\/ol>\n
              PHP atan()<\/code> Return Value<\/h3>\n
              The PHP atan()<\/code> function returns the arc tangent of arg<\/code> in radians.<\/p>\n
              Additional Tips from Fellow Developers<\/h3>\n
              Contributed By: Anonymous<\/p>\n
              Contrary to the current description, it should hold y == tan(atan(y)) for ALL  y.\nHowever, x == atan(tan(x)) only holds for those x which are in the range of atan, which are those x with -pi\/2 < x < pi\/2.\nOf course, those equalities are limited by precision. On my machine\ntan(atan(1000)) returns 1000.0000000001.\natan(tan(0)) returns 0 (correct).\natan(tan(M_PI)) returns -1.2246467991474E-16 instead of 0.<\/code><\/pre>\n
              PHP atan2()<\/code> Function<\/h2>\n
              PHP atan2()<\/code> Usage<\/h3>\n
              The PHP atan2()<\/code><\/code> function will this function calculates the arc tangent of the two variables x<\/code> and y<\/code>. It is similar to calculating the arc tangent of y<\/code> \/ x<\/code>, except that the signs of both arguments are used to determine the quadrant of the result.<\/p>\n
              PHP atan2()<\/code> Syntax<\/h3>\n
               atan2 (<\/span> float $y<\/span> ,<\/span> float $x<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
              PHP atan2()<\/code> Parameters<\/h3>\n
                \n
              1. \n
                y<\/code> \u2014 Dividend parameter <\/p>\n<\/li>\n
              2. \n
                x<\/code> \u2014 Divisor parameter <\/p>\n<\/li>\n<\/ol>\n
                PHP atan2()<\/code> Return Value<\/h3>\n
                The PHP atan2()<\/code> function returns the arc tangent of y<\/code>\/x<\/code> in radians.<\/p>\n
                Additional Tips from Fellow Developers<\/h3>\n
                Contributed By: reubs<\/p>\n
                Just a note:\nPHP's atan2 function receives parameters in (y,x) and Excel receives it in (x,y) format. Just in case you are porting formulas across. :)<\/code><\/pre>\n
                PHP asinh()<\/code> Function<\/h2>\n
                PHP asinh()<\/code> Usage<\/h3>\n
                The PHP asinh()<\/code><\/code> function will give you the inverse hyperbolic sine of arg<\/code>, i.e. the value whose hyperbolic sine is arg<\/code>.<\/p>\n
                PHP asinh()<\/code> Syntax<\/h3>\n
                 asinh (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
                PHP asinh()<\/code> Parameters<\/h3>\n
                  \n
                1. \n
                  arg<\/code> \u2014 The argument to process <\/p>\n<\/li>\n<\/ol>\n
                  PHP asinh()<\/code> Return Value<\/h3>\n
                  The PHP asinh()<\/code> function returns the inverse hyperbolic sine of arg<\/code><\/p>\n
                  Changelog for PHP asinh() Function<\/h3>\n
                  5.3.0 \u2014 <\/strong> This function is now available on all platforms <\/p>\n
                  PHP acosh()<\/code> Function<\/h2>\n
                  PHP acosh()<\/code> Usage<\/h3>\n
                  The PHP acosh()<\/code><\/code> function will give you the inverse hyperbolic cosine of arg<\/code>, i.e. the value whose hyperbolic cosine is arg<\/code>.<\/p>\n
                  PHP acosh()<\/code> Syntax<\/h3>\n
                   acosh (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
                  PHP acosh()<\/code> Parameters<\/h3>\n
                    \n
                  1. \n
                    arg<\/code> \u2014 The value to process <\/p>\n<\/li>\n<\/ol>\n
                    PHP acosh()<\/code> Return Value<\/h3>\n
                    The PHP acosh()<\/code> function returns the inverse hyperbolic cosine of arg<\/code><\/p>\n
                    Changelog for PHP acosh() Function<\/h3>\n
                    5.3.0 \u2014 <\/strong> This function is now available on all platforms <\/p>\n
                    PHP atanh()<\/code> Function<\/h2>\n
                    PHP atanh()<\/code> Usage<\/h3>\n
                    The PHP atanh()<\/code><\/code> function will give you the inverse hyperbolic tangent of arg<\/code>, i.e. the value whose hyperbolic tangent is arg<\/code>.<\/p>\n
                    PHP atanh()<\/code> Syntax<\/h3>\n
                     atanh (<\/span> float $arg<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
                    PHP atanh()<\/code> Parameters<\/h3>\n
                      \n
                    1. \n
                      arg<\/code> \u2014 The argument to process <\/p>\n<\/li>\n<\/ol>\n
                      PHP atanh()<\/code> Return Value<\/h3>\n
                      The PHP atanh()<\/code> function returns inverse hyperbolic tangent of arg<\/code><\/p>\n
                      Changelog for PHP atanh() Function<\/h3>\n
                      5.3.0 \u2014 <\/strong> This function is now available on all platforms <\/p>\n
                      PHP deg2rad()<\/code> Function<\/h2>\n
                      PHP deg2rad()<\/code> Usage<\/h3>\n
                      The PHP deg2rad()<\/code><\/code> function will converts the number in degrees to the radian equivalent .<\/p>\n
                      PHP deg2rad()<\/code> Syntax<\/h3>\n
                       deg2rad (<\/span> float $number<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
                      PHP deg2rad()<\/code> Parameters<\/h3>\n
                        \n
                      1. \n
                        number<\/code> \u2014 Angular value in degrees <\/p>\n<\/li>\n<\/ol>\n
                        PHP deg2rad()<\/code> Return Value<\/h3>\n
                        The PHP deg2rad()<\/code> function returns the radian equivalent of number<\/code><\/p>\n
                        PHP deg2rad()<\/code> Working Examples<\/h3>\n
                        1. deg2rad() example<\/h4>\n
                        <?php<\/span>\necho<\/span> deg2rad<\/span>(<\/span>45<\/span>)<\/span>;<\/span> \/\/ 0.785398163397<\/span>\nvar_dump<\/span>(<\/span>deg2rad<\/span>(<\/span>45<\/span>)<\/span> ===<\/span> M_PI_4<\/span>)<\/span>;<\/span> \/\/ bool(true)<\/span>\n?><\/span><\/span><\/code><\/pre>\n
                        PHP rad2deg()<\/code> Function<\/h2>\n
                        PHP rad2deg()<\/code> Usage<\/h3>\n
                        The PHP rad2deg()<\/code><\/code> function will converts the radian number to the equivalent number in degrees .<\/p>\n
                        PHP rad2deg()<\/code> Syntax<\/h3>\n
                         rad2deg (<\/span> float $number<\/span> )<\/span> :<\/span> float<\/code><\/pre>\n
                        PHP rad2deg()<\/code> Parameters<\/h3>\n
                          \n
                        1. \n
                          number<\/code> \u2014 A radian value <\/p>\n<\/li>\n<\/ol>\n
                          PHP rad2deg()<\/code> Return Value<\/h3>\n
                          The PHP rad2deg()<\/code> function returns the equivalent of number<\/code> in degrees<\/p>\n
                          PHP rad2deg()<\/code> Working Examples<\/h3>\n
                          1. rad2deg() example<\/h4>\n
                          <?php<\/span>\necho<\/span> rad2deg<\/span>(<\/span>M_PI_4<\/span>)<\/span>;<\/span> \/\/ 45<\/span>\n?><\/span><\/span><\/code><\/pre>\n