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//Variable declaration
n1=1.563; //refractive index of core
n2=1.498; //refractive index of cladding
//Calculation
NA=sqrt((n1**2)-(n2**2)); //numerical aperture
theta0=asin(NA); //acceptance angle(radian)
theta0=theta0*180/%pi; //acceptance angle(degrees)
theta0_m=60*(theta0-int(theta0));
//Result
printf('numerical aperture is %0.3f \n',(NA))
printf('acceptance angle is %0.3f degrees %0.3f minutes\n',int(theta0),(theta0_m))
printf('answer varies due to approximating off errors\n')
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