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clear
//
//
//
//Variable declaration
lamda=0.58 //wavelength(angstrom)
theta1=6.45*%pi/180 //glancing angle(radian)
theta2=9.15*%pi/180 //glancing angle(radian)
theta3=13*%pi/180 //glancing angle(radian)
n=1 //order
//Calculation
d1=lamda/(2*sin(theta1)) //interplanar spacing at 1st angle(angstrom)
d2=lamda/(2*sin(theta2)) //interplanar spacing at 2nd angle(angstrom)
d3=lamda/(2*sin(theta3)) //interplanar spacing at 3rd angle(angstrom)
//Result
printf("\n interplanar spacing at 1st angle is %0.3f angstrom",d1)
printf("\n interplanar spacing at 2nd angle is %0.3f angstrom",d2)
printf("\n interplanar spacing at 3rd angle is %0.3f angstrom",d3)
printf("\n answers given in the book are wrong")
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