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If either vec a= 0and vec b= 0then v...

If either ` vec a= 0`and ` vec b= 0`then ` vec a xx vec b= 0`. Is Is the converse true? Justify your answer with an example.

Text Solution

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Take ant parallel non zero vector such that `vec a times vecb = vec0`
Let, `vec a = 2 hat i + 3 hat j +4 hat k`
`vec b = 4 hati +6 hat j + 8 hat k`
`veca times vecb`
...
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