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If |vecaxxvecb|=veca*vecb, then what is ...

If `|vecaxxvecb|=veca*vecb`, then what is the angle between `veca and vecb` ?

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According to the question, `|vecaxxvecb|=veca*vecb`
`therefore ab sin theta =ab cos theta` [Let the angle between `veca and vecb be theta` ]
or, `tan theta =1[because a and b ne 0`]
`therefore theta =45^@`.
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