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clear
//
//
//
//Variable declaration
theta1=6.45 //angle(degrees)
theta2=9.15 //angle(degrees)
theta3=13 //angle(degrees)
lamda=0.58 //wavelength(angstrom)
//Calculation
theta1=theta1*%pi/180 //angle(radian)
theta2=theta2*%pi/180 //angle(radian)
theta3=theta3*%pi/180 //angle(radian)
d=lamda/(2*sin(theta2)) //interplanar spacing of crystal(angstrom)
//Result
printf("\n interplanar spacing of crystal is %0.3f angstrom",d)
printf("\n answer varies due to rounding off errors")
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