#31236 [NEW]: tan(M_PI_4) = 1, not tan(M_PI_2)

From: dtorop933 at gmail dot com Operating system: GNU/Linux PHP version: 5.0.3 PHP Bug Type: Documentation problem Bug description: tan(M_PI_4) = 1, not tan(M_PI_2) Description: ------------ In documentation http://php.net/tan, example code says: echo tan(M_PI_2); // 1 The comment implies tan(M_PI_2) = 1. But tan(M_PI_2) is a really really big number, tan(M_PI_4) = 1. -- Edit bug report at http://bugs.php.net/?id=31236&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31236&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=31236&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=31236&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=31236&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=31236&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=31236&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=31236&r=needscript Try newer version: http://bugs.php.net/fix.php?id=31236&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=31236&r=support Expected behavior: http://bugs.php.net/fix.php?id=31236&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=31236&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=31236&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=31236&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31236&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=31236&r=dst IIS Stability: http://bugs.php.net/fix.php?id=31236&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=31236&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=31236&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=31236&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=31236&r=mysqlcfg