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The magnitude of vector A is7.8units, and it points in the+ x -direction,while a second vector B points in the+ y -direction. (a) If the
The magnitude of vector A is7.8units, and it points in the+x-direction,while a second vector B points in the+y-direction.
(a) If the vector A+B points44counterclockwise from the +x-direction, what is the magnitude of B?
(b) What is the magnitude of A+B?
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