Cosine
Syntax
cos(float $num): float
Parameters
num
An angle in radians
Return
The cosine of num
Examples
1
<? $num = deg2rad(360); $return = cos($num); echo $return; ?>
1
2
<?
for($i = 0; $i <= 360; ++$i)
{
$num = deg2rad($i);
$return = cos($num);
echo $return . PHP_EOL;
}
?>
1 0.99984769515639 0.9993908270191 0.99862953475457 0.99756405025982 0.99619469809175 0.99452189536827 0.99254615164132 0.99026806874157 0.98768834059514 0.98480775301221 0.98162718344766 0.97814760073381 0.97437006478524 0.970295726276 0.96592582628907 0.96126169593832 0.95630475596304 0.95105651629515 0.94551857559932 0.93969262078591 0.9335804264972 0.92718385456679 0.92050485345244 0.9135454576426 0.90630778703665 0.89879404629917 0.89100652418837 0.88294759285893 0.8746197071394 0.86602540378444 0.85716730070211 0.84804809615643 0.83867056794542 0.82903757255504 0.81915204428899 0.80901699437495 0.79863551004729 0.78801075360672 0.77714596145697 0.76604444311898 0.75470958022277 0.74314482547739 0.73135370161917 0.71933980033865 0.70710678118655 0.694658370459 0.6819983600625 0.66913060635886 0.65605902899051 0.64278760968654 0.62932039104984 0.61566147532566 0.60181502315205 0.58778525229247 0.57357643635105 0.55919290347075 0.54463903501503 0.5299192642332 0.51503807491005 0.5 0.48480962024634 0.46947156278589 0.45399049973955 0.43837114678908 0.4226182617407 0.4067366430758 0.39073112848927 0.37460659341591 0.3583679495453 0.34202014332567 0.32556815445716 0.30901699437495 0.29237170472274 0.275637355817 0.25881904510252 0.24192189559967 0.22495105434387 0.20791169081776 0.19080899537654 0.17364817766693 0.15643446504023 0.13917310096007 0.12186934340515 0.10452846326765 0.087155742747658 0.069756473744125 0.052335956242944 0.034899496702501 0.017452406437284 6.1232339957368E-17 -0.017452406437283 -0.034899496702501 -0.052335956242944 -0.069756473744125 -0.087155742747658 -0.10452846326765 -0.12186934340515 -0.13917310096007 -0.15643446504023 -0.17364817766693 -0.19080899537654 -0.20791169081776 -0.22495105434386 -0.24192189559967 -0.25881904510252 -0.275637355817 -0.29237170472274 -0.30901699437495 -0.32556815445716 -0.34202014332567 -0.3583679495453 -0.37460659341591 -0.39073112848927 -0.4067366430758 -0.4226182617407 -0.43837114678908 -0.45399049973955 -0.46947156278589 -0.48480962024634 -0.5 -0.51503807491005 -0.5299192642332 -0.54463903501503 -0.55919290347075 -0.57357643635105 -0.58778525229247 -0.60181502315205 -0.61566147532566 -0.62932039104984 -0.64278760968654 -0.65605902899051 -0.66913060635886 -0.6819983600625 -0.694658370459 -0.70710678118655 -0.71933980033865 -0.73135370161917 -0.74314482547739 -0.75470958022277 -0.76604444311898 -0.77714596145697 -0.78801075360672 -0.79863551004729 -0.80901699437495 -0.81915204428899 -0.82903757255504 -0.83867056794542 -0.84804809615643 -0.85716730070211 -0.86602540378444 -0.8746197071394 -0.88294759285893 -0.89100652418837 -0.89879404629917 -0.90630778703665 -0.9135454576426 -0.92050485345244 -0.92718385456679 -0.9335804264972 -0.93969262078591 -0.94551857559932 -0.95105651629515 -0.95630475596304 -0.96126169593832 -0.96592582628907 -0.970295726276 -0.97437006478524 -0.97814760073381 -0.98162718344766 -0.98480775301221 -0.98768834059514 -0.99026806874157 -0.99254615164132 -0.99452189536827 -0.99619469809175 -0.99756405025982 -0.99862953475457 -0.9993908270191 -0.99984769515639 -1 -0.99984769515639 -0.9993908270191 -0.99862953475457 -0.99756405025982 -0.99619469809175 -0.99452189536827 -0.99254615164132 -0.99026806874157 -0.98768834059514 -0.98480775301221 -0.98162718344766 -0.97814760073381 -0.97437006478524 -0.970295726276 -0.96592582628907 -0.96126169593832 -0.95630475596304 -0.95105651629515 -0.94551857559932 -0.93969262078591 -0.9335804264972 -0.92718385456679 -0.92050485345244 -0.9135454576426 -0.90630778703665 -0.89879404629917 -0.89100652418837 -0.88294759285893 -0.8746197071394 -0.86602540378444 -0.85716730070211 -0.84804809615643 -0.83867056794542 -0.82903757255504 -0.81915204428899 -0.80901699437495 -0.79863551004729 -0.78801075360672 -0.77714596145697 -0.76604444311898 -0.75470958022277 -0.74314482547739 -0.73135370161917 -0.71933980033865 -0.70710678118655 -0.694658370459 -0.6819983600625 -0.66913060635886 -0.65605902899051 -0.64278760968654 -0.62932039104984 -0.61566147532566 -0.60181502315205 -0.58778525229247 -0.57357643635105 -0.55919290347075 -0.54463903501503 -0.52991926423321 -0.51503807491005 -0.5 -0.48480962024634 -0.46947156278589 -0.45399049973955 -0.43837114678908 -0.4226182617407 -0.4067366430758 -0.39073112848927 -0.37460659341591 -0.3583679495453 -0.34202014332567 -0.32556815445716 -0.30901699437495 -0.29237170472274 -0.275637355817 -0.25881904510252 -0.24192189559967 -0.22495105434387 -0.20791169081776 -0.19080899537654 -0.17364817766693 -0.15643446504023 -0.13917310096007 -0.12186934340515 -0.10452846326765 -0.087155742747658 -0.069756473744126 -0.052335956242943 -0.034899496702501 -0.017452406437283 -1.836970198721E-16 0.017452406437283 0.0348994967025 0.052335956242943 0.069756473744125 0.087155742747658 0.10452846326765 0.12186934340515 0.13917310096007 0.15643446504023 0.17364817766693 0.19080899537654 0.20791169081776 0.22495105434386 0.24192189559967 0.25881904510252 0.275637355817 0.29237170472274 0.30901699437495 0.32556815445716 0.34202014332567 0.3583679495453 0.37460659341591 0.39073112848927 0.4067366430758 0.4226182617407 0.43837114678908 0.45399049973955 0.46947156278589 0.48480962024634 0.5 0.51503807491005 0.5299192642332 0.54463903501503 0.55919290347075 0.57357643635105 0.58778525229247 0.60181502315205 0.61566147532566 0.62932039104984 0.64278760968654 0.65605902899051 0.66913060635886 0.6819983600625 0.694658370459 0.70710678118655 0.71933980033865 0.73135370161917 0.74314482547739 0.75470958022277 0.76604444311898 0.77714596145697 0.78801075360672 0.79863551004729 0.80901699437495 0.81915204428899 0.82903757255504 0.83867056794542 0.84804809615643 0.85716730070211 0.86602540378444 0.8746197071394 0.88294759285893 0.89100652418837 0.89879404629917 0.90630778703665 0.9135454576426 0.92050485345244 0.92718385456679 0.9335804264972 0.93969262078591 0.94551857559932 0.95105651629515 0.95630475596304 0.96126169593832 0.96592582628907 0.970295726276 0.97437006478524 0.97814760073381 0.98162718344766 0.98480775301221 0.98768834059514 0.99026806874157 0.99254615164132 0.99452189536827 0.99619469809175 0.99756405025982 0.99862953475457 0.9993908270191 0.99984769515639 1
