88. Two vectors Ā& B are at right angles to each
other when (aiims 1987)
(a) A+B=0
(b) A - B = 0
(c) A x B=0
(d) Ā.B=0
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1
Answer:
then the answer is c
Explanation:
beacuse cross product of two vectors=multiplication of magnitude of two vectors×cos theta
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