SIN():
SIN(X);<?Php
echo SIN(PI()); // Output is 1.2246467991474E-16 // same as 0
echo "<br>";
echo SIN(PI()/2); // Output 1
echo "<br>";
echo SIN(PI()/3); // Output is 0.86602540378444
echo "<br>";
echo SIN(PI()/4); // Output is 0.70710678118655
?>deg2rad() with SIN()
We can use deg2rad() to convert Degree value to radian and then use SIN().<?Php
echo SIN(deg2rad(0)); // Output is 0
echo "<br>";
echo SIN(deg2rad(90)); // Output is 1
echo "<br>";
echo SIN(deg2rad(180)); // Output is 1.2246467991474E-16 // same as 0
?>Plotting of SIN & SIN curves by using PHP GD function with deg2rad()
Math Functions SIN() function rad2deg() function
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