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

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:

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=

Let veca ,vecb , vecc be three unit vectors such that angle between veca and vecb is alpha , vecb and vecc " is " beta and vecc and veca " is " gamma. " if " | veca. + vecb + vecc| =2 , then cos alpha + cos beta + cos gamma =

veca, vecb and vecc are unit vecrtors such that |veca + vecb+ 3vecc|=4 Angle between veca and vecb is theta_(1) , between vecb and vecc is theta_(2) and between veca and vecb varies [pi//6, 2pi//3] . Then the maximum value of cos theta_(1)+3cos theta_(2) is

veca, vecb and vecc are unit vecrtors such that |veca + vecb+ 3vecc|=4 Angle between veca and vecb is theta_(1) , between vecb and vecc is theta_(2) and between veca and vecb varies [pi//6, 2pi//3] . Then the maximum value of cos theta_(1)+3cos theta_(2) is

veca and vecc are unit collinear vectors and |vecb|=6 , then vecb-3vecc = lambda veca , if lambda is:

veca, vecb, vecc are unit vectors such that if the angles between the vectors veca and vecb , vecb and vecc , vecc and veca are respectively pi/6, pi/4 and pi/3 , then find out the angle the vector veca makes with the plane containing vecb and vecc is

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 .

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 find the value of |veca xx vecb -veca xx vecc|