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clear
//
//
//
//Variable declaration
n1=1.48 //Core refractive index
n2=1.45 //Cladding refractive index
//Calculation
NA=sqrt(n1**2-n2**2) //numerical aperture
thetamax=asin(NA)*180/%pi
thetamaxd=int(thetamax) //angle of acceptance(degrees)
thetamaxm=60*(thetamax-thetamaxd) //angle of acceptance(minutes)
//Result
printf("\n numerical aperture is %0.4f ",NA)
printf("\n angle of acceptance is %0.3f degrees %0.0f minutes",thetamaxd,thetamaxm)
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