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clear
//
//
//
//Variable declaration
delta=0.03; //relative difference
i0=22*%pi/180; //acceptance angle(radians)
//Calculations
NA=sin(i0); //numerical aperture
N=1-delta;
thetac=asin(N); //critical angle(radians)
theta_c=thetac*180/%pi ; //critical angle(degrees)
//Result
printf("\n numerical aperture is %0.3f ",NA)
printf("\n critical angle is %0.2f degrees",theta_c)
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