Find the half-power beamwidth (HPBW) and first-null beamwidth (FNBW), in radians and degrees, for the following normalized radiation intensities: (a) U(8) = cos 0 cos(20) (b) U(6) = cos? 8 cos (28) (c) U(0) = cos(6) cos(30) (d) U(6) = cos (6)cos (30) (e) U(0) = cos(20) cos(30) (f) U(0) = cos (20) cos (30)) %3D (0ses90°.0so S 360°) %3! %3D

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