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diff --git a/3137/CH12/EX12.18/Ex12_18.sce b/3137/CH12/EX12.18/Ex12_18.sce
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+//Initilization of variables
+theta=%pi/3 //rad
+//Calculations
+t=sqrt(theta) //s
+thetadot=2*t 
+thetadoubledot=2
+r=2*t^2
+rdot=4*t
+rdoubledot=4
+ax=rdoubledot-(r*thetadoubledot*thetadoubledot) //ft/s^2
+ay=2*rdot*thetadot+r*thetadoubledot //ft/s^2
+a=sqrt(ax^2+ay^2)
+thetax=30+atand(ax/ay) //degrees
+//Solving by cartesian co-ordinate system yields same solution
+//Result
+clc
+printf('The acceleration is %f ft/s^2 and thetax=%f degrees',a,thetax)
+//Decimal accuracy causes discrepancy in answers