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 :

if veca , vecb ,vecc are three vectors such that veca +vecb + vecc = vec0 then

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 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|

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

If veca, vecb, vecc are any three vectors such that (veca+vecb).vecc=(veca-vecb)=vecc=0 then (vecaxxvecb)xxvecc is

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

Let veca, vecb and vecc be three vectors such that |veca|=2, |vecb|=1 and |vecc|=3. If the projection of vecb along veca is double of the projection of vecc along veca and vecb, vecc are perpendicular to each other, then the value of (|veca-vecb+2vecc|^(2))/(2) is equal to

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 + vecc.veca is equal to