70. The x and y components of vector Ä are
4 m and 3 m respectively. The x and y
components of vector Ā +B are 10 m
and 9 m respectively. The angle of vector
B that it makes with the x-axis is
74
(a) 60°
(b) 45°
(c) 300
(d) 135°
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Answer:
d.
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