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diff --git a/3537/CH5/EX5.9/Ex5_9.sce b/3537/CH5/EX5.9/Ex5_9.sce
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index 000000000..ca71f5780
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+++ b/3537/CH5/EX5.9/Ex5_9.sce
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+//Example 5_9
+clc();
+clear;
+//To calculate the glancing angle
+theta1=8.58  //units in degrees
+n1=3
+lamda1=0.842  //units in A
+n2=3
+lamda2=0.842  //units in A
+sintheta3=(sin(theta1*%pi/180)*n1*lamda1)/(n2*lamda2)
+theta3=asin(sintheta3)*180/%pi*3
+printf("The Glancing angle is Theta3=%.2f degrees",theta3)
+
+
diff --git a/3537/CH5/EX5.9/Ex5_9.txt b/3537/CH5/EX5.9/Ex5_9.txt
new file mode 100644
index 000000000..98c8e6ee9
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+The Glancing angle is Theta3=25.74 degrees 
+\ No newline at end of file