Learning AWK Programming

The sin (expr) function

The sin(expr) function returns the sine of the expression expr, where expr is expressed in radians. The following code block shows an example of a sine function:

$ vi sinefunc.awkBEGIN  {    print "sin(90) = ", sin(90);    print "sin(45) = ", sin(45);    }$ awk -f sinefunc.awk

The output of the execution of the previous code is as follows:

sin(90) =  0.893997sin(45) =  0.850904