If `|veca|=1,|vecb|=2,|vecc|=3and veca+vecb+vecc=0` the show that `veca.vecb+vecb.vecc+vecc.veca=-`7

If veca,vecb, vecc are three vectors such that |veca |= 5, |vecb| = 12 and | vecc|=13 and veca+vecb+vecc=0 then veca.vecb+vecb.vecc+vecc.veca is equal to

if veca + vecb + vecc=0 , then show that veca xx vecb = vecb xx vecc = vecc xx veca .

If |veca|=3, |vecb|=1, |vecc|=4 and veca + vecb + vecc= vec0 , find the value of veca.vecb+ vecb.vecc + vecc.veca .

If |veca|=3,|vecb|= 5 and |vecc|=4 and veca+ vecb + vecc =vec0 then the value of ( veca. vecb + vecb.vecc) is equal tio

If veca,vecb and vecc are unit vectors such that veca + vecb + vecc= 0 , then prove that veca.vecb+vecb.vecc+vecc.veca=-3/2

If veca,vecbandvecc are three vectors such that veca+vecb+vecc=0and|veca|=2,|vecb|=3and|vecc|=5 , then the value of veca.vecb+vecb.vecc+vecc.veca is

If veca,vecb, vecc are three vectors such that veca + vecb +vecc =vec0, |veca| =1 |vecb| =2, | vecc| =3 , then veca.vecb + vecb .vecc + vecc.veca is equal to

If veca,vecb,vecc are three unit vectors such that veca+vecb+vecc=0, then veca.vecb+vecb.vecc+vecc.veca is equal to (A) -1 (B) 3 (C) 0 (D) -3/2

If veca,vecb,vecc are coplanar vectors , then show that |{:(veca,vecb,vecc),(veca*veca,veca*vecb,veca*vecc),(vecb*veca,vecb*vecb,vecb*vecc):}|=vec0

If veca,vecbandvecc are unit vectors such that veca+vecb+vecc=0 , then the value of veca.vecb+vecb.vecc+vecc.veca is