CBSE Class 12-science Answered
PLS EXPLAIN......
Asked by | 15 Jun, 2009, 12:28: AM
Expert Answer
a . b = a. c
Hence, a.(b-c)=0 ...(1)
Now:
a X b = a X c
Hence:
a X (b- c)=0...(2)
From (1) and (2) both vectors a and b-c are perpendicular as well as parallel. It implies either of them is a zero vector. As a is a non zero vector, b-c=0 Hence b=c.
Answered by | 15 Jun, 2009, 03:11: AM
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