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How to use acos() function to get the arc cosine value of N in PHP



165 views
asked Mar 31, 2016 by avibootz
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1 Answer

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echo "acos(0) = " . acos(0) . "<br />";
echo "acos(-1) = " . acos(-1) . "<br />";
echo "acos(1) = " . acos(1) . "<br />";
echo "acos(0.5) = " . acos(0.5) . "<br />";

/*
run:
 
acos(0) = 1.5707963267949
acos(-1) = 3.1415926535898
acos(1) = 0
acos(0.5) = 1.0471975511966
 
*/

 



answered Mar 31, 2016 by avibootz

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