If `veca,vecb,vecc ` are perpendicular to `vecb+vecc,vecc+veca and veca+vecb` respectively and if `|veca+vecb|=6,|vecb+vecc|=8 and |vecc+veca|=10,then |veca+vecb+vecc|` (A) `5sqrt(2)` (B) 50 (C) `10sqrt(2)` (D) 10

If |veca|=|vecb|=|vecc|=1 and |veca-vecb|^(2)+|vecb-vecc|^(2)+|vecc-veca|^(2)=9 then |2veca+5vecb+5vecc|=?

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

The value of [(veca-vecb, vecb-vecc, vecc-veca)] , where |veca|=1, |vecb|=5, |vecc|=3 , is

veca,vecb,vecc are non zero vectors. If vecaxxvecb=vecaxxvecc and veca.vecb=veca.vecc then show that vecb=vecc .

If veca,vecb,vecc are coplanar, show that veca+vecb, vecb+vecc, vecc+veca are also coplanar.

Prove that [veca+vecb, vecb+vecc ,vecc+veca]=2[veca vecb vecc]

If veca + 2 vecb + 3 vecc = vec0 " then " veca xx vecb + vecb xx vecc + vecc xx veca=

If veca, vecb and vecc are vectors such that |veca|=3,|vecb|=4 and |vec|=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 and vecc are three vectors such that vecaxx vecb =vecc, vecb xx vecc= veca, vecc xx veca =vecb then prove that |veca|= |vecb|=|vecc|