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- -    - In the figure; the magnitude of vector A is 18.0 units, and the...

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In the figure; the magnitude of vector A is 18.0 units, and the magnitude of vector B is 12.0 units (the 30.0° angle is between vector B and the -y axis, as shown ). What vector C- (magnitude and direction) must be added

to the vectors A and B so that the resultant of these three vectors points in the negative x direction and has a magnitude of 7.5O units?

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