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clear
//
//
//
//Variable declaration
n1=1.55 //Core refractive index
n2=1.6 //Cladding refractive index
theta1=60*%pi/180 //angle of incidence(radian)
//Calculation
x=n1*sin(theta1)/n2
theta2=asin(x)*180/%pi //angle of reflection(degrees)
//Result
printf("\n angle of reflection is %0.2f degrees",theta2)
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