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Column-I gives operation of vectors vecA...

Column-I gives operation of vectors `vecA and vecB` and column- II gives the angle `(theta)` between `vecA` and `vecB` (`vecA` and `vecB` are not zero vectors ).

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The correct Answer is:
`a to r,s; b to p; c to q; d to p`
`|vecA xx vecB| = vecA.vecB`
`AB sin theta = AB cos theta `
`tan theta = 1 rArr theta = pi // 4 or 3pi//4`
(b) `vecA xx vecB = vecB xx vecA ` only if `theta = 0^(@)`
(c) `|vecA + vecB|= |vecA - vecB|`
`sqrt(A^(2) +B^(2) + 2AB cos theta )= sqrt(A^(2) + B^(2) - 2AB cos theta)`
`" "4 AB cos theta =0`
`" "theta = pi//2`
(d) `vecA + vecB = vecC` with A+B= C if `theta = 0^(@)`.
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