Vector A ? is 2.80 cm long and is 60.0 degrees above the x -axis in the first qu
ID: 1277789 • Letter: V
Question
Vector A? is 2.80 cm long and is 60.0 degrees above the x-axis in the first quadrant. Vector B is 1.90 cm long and is 60.0 degrees below the x-axis in the fourth quadrant.
Part H
Use components to find the direction of B-A .
answer in degrees counterclockwise from x-axis
Also I've been getting 276.3 and it says I'm close but I've redone it three times now and keep getting the same answer, so if you could explain what I'm doing wrong to get that answer it would be very helpful!
answer in degrees counterclockwise from x-axis
Explanation / Answer
Ax = 2.8*cos60 = 1.4 cm
Ay = 2.8*sin60 = 2.42cm
Bx = 1.9*cos60 = 0.95 cm
By = -1.9*sin60 = -1.64 cm
Rx = A x + Bx = 1.4 + 0.95 = 2.35 cm
Ry = Ay + By = 2.42 - 1.64 = 0.78 cm
tan^_1(Ry/Rx) = 18.4
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