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1. Vector B =(52.8)x + (-47.5)y. What is the magnitude of B?

2. Vector B=(52.8)x + (47.5)y. What is the direction of B in radians counter clockwise from the positive x axis?

1. sqrt [(52.8)^2 + (-47.5)^2] = 71.0

2. tan^-1 (47.5/52.8) = 42.0 degrees

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