Vector has a magnitude of 8.10 units and makes an angle of 52.0° with the positive xaxis. Vector also has a magnitude of 8.00 units and is directed along the negative xaxis. Using graphical methods find the following.
a) The vector sum
Magnitude of A + B:___ units
Direction of A + B ____° counterclockwise from +xaxis
(b) The vector difference A  B.
Magnitude of A  B______ units
Direction of A B_______° counterclockwise from +xaxis
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1 answer

a. 8.1[52o] + 8[180o]
X = 8.1*cos52 + 8*cos180 = 4.99 Units
Y = 8.1*sin52 + 8*sin180 = 6.38 Units.
Mag. = Sqrt(4.99^2+6.38^2 = 8.1 Units
tanA = Y/X = 6.38/4.99 = 1.27856
A = 51.97o = Direction.
b. 8.1[52o]  8[180o]
Subtract and use same procedure as "a". 👍
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