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Given that vec a dot vec b=0and vec a...

Given that ` vec a dot vec b=0`and ` vec axx vec b= 0`. What can you conclude about the vectors ` vec a`and ` vec b`.

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Given that,
`vec a . vec b` =0
i) either `|veca| =0` and `|vecb| =0` or `veca` perpendicular to `vecb` (in case `veca` and `vecb` are non zero)
Also, `veca times vecb = vec 0`
...
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