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+clc;
+//page no 590
+//prob no. 16.7.2
+//For the Hertzian dipole, the radiation pattern is described by g(x)=sin^2(x) and g(y)=1
+// Determination of -3dB beamwidth
+// from the polar diagram shown we have
+g_x=0.5;
+x=asind(sqrt(g_x));
+g_y=0.5;
+y1=asind(sqrt(g_y));
+y=y1+90;
+//Therefore
+z=y-x;
+disp('degree',z,'The -3dB beamwidth is');
+\ No newline at end of file