Three vectors `veca,vecb` and `vecc` are such that `|veca|=2,|vecb|=3,|vecc|=4,`and `veca+vecb+vecc=vec0.`
Find `4veca.vecb+3vecb.vecc+3vecc.veca`.

Three vectors veca,vecb and vecc are such that |veca|=2,|vecb|=3,|vecc|=4 and veca+vecb+vecc=0 find 4veca*vecb+3vecb*vecc+3vecc*veca .

Three vectors veca, vecb" and "vecc are such that |veca|=2,|vecb|=3,|vecc|=4" and "veca+vecb+vecc=0 find 4veca*vecb+3vecb*vecc+3vecc*veca .

If |veca|=5,|vecb|=6,|vecc|=7 and veca+vecb+vecc=vec0 , find veca.vecb+vecb.vecc+vecc.veca.

If the vectors veca, vecb, and vecc are coplanar show that |(veca,vecb,vecc),(veca.veca, veca.vecb,veca.vecc),(vecb.veca,vecb.vecb,vecb.vecc)|=0

The vectors veca-vecb,vecb-vecc,vecc-veca are

If veca, vecb and vecc are vectors such that |veca|=3,|vecb|=4 and |vecc|=5 and (veca+vecb) is perpendicular to vecc, (vecb+vecc) is perpendicular to veca and (vecc+veca) is perpendicular to vecb then |veca+vecb+vecc|= (A) 4sqrt(3) (B) 5sqrt(2) (C) 2 (D) 12

If |veca|+|vecb|=|vecc|and veca+vecb=vecc then find the angle between veca and vecb .

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