The asin() function, also called the arc sine function, calculates and returns the inverse sine of a number.
To be more specific, it returns the inverse sine of a number in radians.
Figure 1 below shows the mathematical representation of the asin() function.
Figure 2 shows the visual representation of the asin() function.
To convert radians to degrees, use the following function:
rad2deg(angleInRadians)
asin(num)
This function requires a number as a parameter.
asin() returns the inverse sine of a number (in radians) that is set as a parameter. The return value lies in the interval [-pi/2, pi/2] radians.
#this header for rad2deg() functionuse Math::Trig;#Positive number in radians$a = asin(0.5);print "asin(0.5): $a Radians\n";#negative number in radians$b = asin(-0.5);print "asin(-0.5): $b Radians\n";#applying asin() and then converting the result in radians to degrees#radians = 0.5$c = rad2deg(asin(0.5));print "asin(0.5): $c Degrees\n";