If either vector a=0 or b=0, then a.b=0. But the converse need not be true .
Asked by
| 29th May, 2009,
11:57: PM
Expert Answer:
if either vector a=0 or b=0, then a.b=0. But if a.b = 0 then we cant conclude that one of vectors a or b is zero
a.b =ab cos θ if θ is 90o then cos 90o = 0 hence a.b will be zero even if both a and b are non zero vectors
Answered by
| 30th May, 2009,
01:56: PM
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