Let `veca,vecb and vecc` be three vectors such that `vecane0, |veca|=|vecc|=1,|vecb|=4and |vecbxxvecc|=sqrt15`. If `vecb-2vecc=lambdaveca` then find the value of `lambda` .

Let veca,vecb,vecc be three vectors such that veca ne vec0 and veca xx vecb=2veca xx vecc, |veca|=|vecc|=1,|vecb|=4 and |vecbxxvecc|=sqrt(15) . If vecb-2vecc=lambdaveca , then |lambda| is equal to :

Let veca, vecb, vecc be three vectors such that a!=0 and veca xx vecb = 2veca xx vecc, |veca| = |vecc| = 1, |vecb| = 4 and |vecb xx vecc| = sqrt15. If vecb-2 vecc = lambda veca, then lambda is

Let veca , vecb and vecc be three non-zero vectors such that veca + vecb + vecc = vec0 and lambda vecb xx veca + vecbxxvecc + vecc xx veca = vec0 then find the value of lambda .

Let veca vecb and vecc be three non-zero vectors such that veca + vecb + vecc = vec0 and lambda vecb xx veca xx veca + vecbxxvecc + vecc + veca = vec0 then find the value of lambda .

If veca,vecb,vecc are three vectors such that |veca|=2,|vecb|=4,|vecc|=4,vecb.vecc=0,vecb.veca=vecc.veca , then find the value of |veca+veca-vecc|

veca,vecb,vecc be three vectors such that veca+vecb+vecc=0" and "|veca|=1,|vecb|=4,|vecc|=2 . Evalute veca*vecb+vecb*vecc+vecc*veca .

If veca,vecb and vecc are three vectors such that |veca|=5,|vecb|=12,|vecc|=13 and veca+vecb+vecc=0 then find the value of veca.vecb+vecb.vecc+vecc.veca.

If veca,vecb,vecc are three vectors such that : |veca|=5,|vecb|=12 and |vecc|=13 and veca+vecb+vecc=vec0 , find the value of veca*vecb+vecb*vecc+vecc*veca .