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+clc,clear
+//example 1.3
+//To determine length of unknown side in 3 given right triangles
+
+//Triangle ABC
+AB=5 //given
+AC=4 //given
+a=sqrt(AB^2- AC^2) //by pythagoras theorem
+printf('Triangle ABC: a=%f units \n',a)
+
+//Triangle DEF
+DE=2 //given
+EF=1 //given
+e=sqrt(DE^2- EF^2) //by pythagoras theorem
+printf(' Triangle DEF: e=%f units = sqrt(%f) units\n',e,e^2)
+
+//Triangle XYZ
+XZ=1 //given
+YZ=1 //given
+z=sqrt(XZ^2+YZ^2)//by pythagoras theorem
+printf(' Triangle XYZ: z=%f units = sqrt(%f) units\n',z,z^2)