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If veca=vecb+vecc, then write the value ...

If veca=vecb+vecc, then write the value of `veca*(vecbxxvecc).`

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If abs(veca)=3,abs(vecb)=2 and veca*vecb=0 , then write the value of abs(vecaxxvecb) .

If veca,vecb and vecc are three vectors such that |veca|=5,|vecb|=12,|vecc|=13 and veca+vecb+vecc=0 then find the value of veca.vecb+vecb.vecc+vecc.veca.

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If veca, vecb, vecc be unit vectors and vecaxx(vecbxxvecc) = 1/2hatb , find the angles that veca makes with hatb and hatc , where hatb,hatc are not parallel.

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(-veca).vecbxx(-vecc)) =

USHA PUBLICATION-PREVIOUS YEAR QUESTION 2019-PREVIOUS YEAR QUESTION
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