Part A Let A = 4; -1, B = 3 + 7, and = A +...

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Part A Let A = 4; -1, B = 3 + 7, and = A + B. Part B What is the magnitude of vector C? View Available Hint(s) CE Submit Part C What is the direction of vector C? Express your answer in degrees. View Available Hint(s) ? ? above positive x-axis Part A Let A = 4; -1, B = 3 + 7, and = A + B. Part B What is the magnitude of vector C? View Available Hint(s) CE Submit Part C What is the direction of vector C? Express your answer in degrees. View Available Hint(s) ? ? above positive x-axis