If the vectors abari+barj+bark,bari+bbar...

If the vectors `abari+barj+bark,bari+bbarj+bark,barI+barj+cbarK` are coplanar then the value of a+b+c-abc =

A

`-2`

B

`-1`

C

2

D

1

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The correct Answer is:

C

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AAKASH SERIES-MULTIPLE PRODUCT OF VECTORS-PRACTICE EXERCISE

If bara,barb,barc are non-coplanar vectors and (bara+2barb+barc).(bara...
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If bara, barb, barc are the sides of a triangle ABC then [barabarb bar...
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If the vectors abari+barj+bark,bari+bbarj+bark,barI+barj+cbarK are cop...
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If the vectors (a, b, c), (b, c, a) and (c, a, b) are linealy dependen...
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The volume of a parallelopiped whose edges are represented by -12bari+...
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The volume of the rectangular box whose coterminal edges along axes of...
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If barx.bara=barx.barb=barx.barc=0 for some non-zero vector barx and a...
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The volume of the tetrahedron having the edges barI+2barj-bark,bari+ba...
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If bara,barb are non-zero and non-collinear vectors then [bara barb ba...
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Which of the following statement is not true
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If bara is perpendicular to barbxxbarc, then which of the following is...
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barixx(barjxxbark)+barjxx(barkxxbari)+barkxx(barixxbarj)=
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barixx(barixxbara)+barjxx(barjxxbara)+barkxx(barkxxbara)=
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If barb, barc are like unit vectors and baraxx (barbxx barc) = bar0 th...
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If bara, barb are two unit perpendicular vectors then baraxx (baraxx b...
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If [baraxx(barbxxbarc)]xxbarc=(bara·barc)barR then barR=
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If bara and barb are unit vectors, then the vector ( bara + barb) xx (...
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If barp is non- · zero vector such that barp. bara= barp. barb = 0 and...
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If (bara xx barb).(barc xx bard) = (bara.barc)(barb.bard) + k(bara.bar...
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If (baraxxbarb)xx(barcxxbard)=[barabarbbard]barc +kbard then k =
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