`veca and vecc` are unit vectors `|vecb|=4 `with` vecaxxvecb=2(vecaxxvecc)`. The angle between `veca and vecc` is `cos^-1(1/4).` Then `vecb-2vecc=lamdaveca, if lamda` is (A) 3 (B) `-4 (C) 4 (D) `-1/4`

Let veca and vecc be unit vectors such that |vecb|=4 and vecaxxvecb=2(vecaxxvecc) . The angle between veca and vecc is cos^(-1)(1/4) . If vecb-2vecc=lamdaveca then lamda=

veca and vecc are unit vectors and |vecb|=4 the angle between veca and vecc is cos ^(-1)(1//4) and vecb - 2vecc=lambdaveca the value of lambda is

If three vectors veca, vecb,vecc are such that veca ne 0 and veca xx vecb = 2(veca xx vecc),|veca|=|vecc|=1, |vecb|=4 and the angle between vecb and vecc is cos^(-1)(1//4) , then vecb-2vecc= lambda veca where lambda is equal to:

If veca, vecb,vecc are unit vectors such that veca.vecb = 0= veca.vecc and the angle between vecb and vecc is pi//3 then the value of |vecaxxvecb -veca xx vecc| is

If veca and vecb are two vectors such that |veca|=1, |vecb|=4, veca.vecb=2 . If vecc=(2veca xx vecb)-3vecb , then the angle between veca and vecc is

Let vecA, vecB and vecC be unit vectors such that vecA.vecB = vecA.vecC=0 and the angle between vecB and vecC " be" pi//3 . Then vecA = +- 2(vecB xx vecC) .

veca and vecb are two vectors such that |veca|=1 ,|vecb|=4 and veca. Vecb =2 . If vecc = (2vecaxx vecb) - 3vecb then find angle between vecb and vecc .

vecA, vecB and vecC are vectors such that vecC= vecA + vecB and vecC bot vecA and also C= A . Angle between vecA and vecB is :

Let veca=2hati+hatj-2hatk and vecb=hati+hatj. If vecc is a vector such that veca.vecc=|vecc|,|vecc-veca|=2sqrt(2) and the angle between (vecaxxvecb) and vecc is pi/6 then |(vecaxxvecb)xvec|= (A) 2/3 (B) 1/2 (C) 3/2 (D) 1

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