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Three atoms with atomic radii of 4.0, 5.0, and 5.2 are arranged as in the figure. Find the measure of the angle at the center

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son Given diagram B A ce с 16° radius n= 5.2 Radius B = 5 Radius c = 4 length of BC = 5 ++ = 9 length of AB = 5 +5.2 - 10.2 (

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