a + d = 2i + 2j
θa+d = tan-1 (y/x) = tan-1 (2/2) = 45°
f + c = -1i + 2j + 1i = 2j
The vector is pointing in the positive y-axis. Posive y-axis is directed 90° from the positive x-axis counter clockwise.
θf+c = 90°
a + b = 2i - 2j
Six vectors (a through f ) have the magnitudes and directions indicated in the figure. (Figure 1)
Rank the vector combinations on the basis of their angle, measured counterclockwise from the positive x-axis. Vectors parallel to the positive x-axis have an angle of 0°. All angle measures fall between 0° and 360°.
Rank from largest to smallest. To rank items as equivalent, overlap them.
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