PHP Math Functions Part 6 - PHP Tutorial 69
Notes for You:: PHP Math Functions Part 6 - PHP Tutorial 69
rad2deg() and deg2rad() PHP Math Functions.
To perform mathematical calculations easily PHP provides various mathematical functions and constants.
deg2rad(angleInDeg: Number):Number
Converts the given angleInDeg to radians
Ex: echo deg2rad(180); // 3.1415926535898
rad2deg (angleInRad: Number):Number
Converts the given angleInRad to degrees
Ex: echo rad2deg(M_PI); // 180
Example Code:
echo M_PI; // 3.1415926535898
echo "<br/>";
echo rad2deg(M_PI); // 180
echo "<br/>";
echo deg2rad(180); // 3.1415926535898
echo "<br/>";
echo deg2rad(90); // 1.5707963267949
echo "<br/>";
echo rad2deg(M_PI/2); // 90
echo "<br/>";
echo deg2rad(360); // 6.2831853071796
echo "<br/>";
echo rad2deg(2 * M_PI); // 360
echo "<br/>";
echo rad2deg(6.2831853071796); // 360
echo "<br/>";
Note:
replace < with less-than symbol.
replace > with greater-than symbol.
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