The non-zero vectors `veca, vecb` and `vecc` are related by `veca=8vecb` and `vecc=-7vecb` angle between `veca` and `vecc` is

The non zero vectors veca,vecb, and vecc are related byi veca=8vecb nd vecc=-7vecb. Then the angle between veca and vecc is (A) pi (B) 0 (C) pi/4 (D) pi/2

If veca +vecb +vecc =vec0, |veca| =3 , |vecb|=5 and |vecc| =7 , then the angle between veca and vecb is

Let vecr be a non - zero vector satisfying vecr.veca = vecr.vecb =vecr.vecc =0 for given non- zero vectors veca vecb and vecc Statement 1: [ veca - vecb vecb - vecc vecc- veca] =0 Statement 2: [veca vecb vecc] =0

For three non - zero vectors veca, vecb and vecc , if [(veca, vecb and vecc)]=4 , then [vecaxx(vecb+2vecc)vecbxx(vecc-3veca)vecc xx(3veca+vecb)] is equal to

for any three vectors, veca, vecb and vecc , (veca-vecb) . (vecb -vecc) xx (vecc -veca) =

If veca, vecb, vecc are vectors such that veca.vecb=0 and veca + vecb = vecc then:

Three vectors veca,vecb,vecc are such that veca xx vecb=4(veca xx vecc) and |veca|=|vecb|=1 and |vecc|=1/4 . If the angle between vecb and vecc is pi/3 then vecb is

For non-zero vectors veca, vecb and vecc , |(veca xx vecb) .vecc = |veca||vecb||vecc| holds if and only if

If veca+vecb+vecc=0,|veca|=3,|vecb|=5,|vecc|=7 find the angle between veca and vecb

Let vea, vecb and vecc be unit vectors such that veca.vecb=0 = veca.vecc . It the angle between vecb and vecc is pi/6 then find veca .