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clear
//
//
//
//Variable declaration
h=1
k=1
l=0 //miller indices
d100=0.28 //lattice constant(nm)
n=2
lamda=0.071 //wavelength(nm)
//Calculation
d110=d100/sqrt(h**2+k**2+l**2) //interplanar spacing(m)
theta=asin(n*lamda/(2*d110))*180/%pi //glancing angle(degrees)
//Result
printf("\n glancing angle is %0.0f degrees",theta)
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