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A football player runs the pattern given in the drawing by the three displacement vectors A (or \( \vec{A}\)), B (or \(\vec{B}\)) and C (or \(\vec{C}\)). The magnitudes of these vectors are \( A = 5.00\) m, \( B = 15.0\) m, and \( C = 18.0\) m. Using the component method, find the magnitude and direction \(\theta\) of the resultant vector \( \vec{A} + \vec{B} + \vec{C} \).