Let `veca,vecb,vecc` be unit vectors such that `veca+vecb+vecc=vec0`. Which of the following is correct?

Let veca, vecb ,vecc be unit vetors such that veca + vecb + vecc = vec0 , which one of the following is correct ?

Let veca,vecb,vecc be three unit vectors such that 3veca+4vecb+5vecc=vec0 . Then which of the following statements is true? (A) veca is parrallel to vecb (B) veca is perpendicular to vecb (C) veca is neither parralel nor perpendicular to vecb (D) veca,vecb,vecc are copalanar

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

Let veca , vecb , vecc be unit vectors such that veca .vecb =0=veca.vecc . If the angle between vecb and vecc " is " pi/6 , " then " veca equals

Let veca, vecb and vecc be unit vector such that veca + vecb - vecc =0 . If the area of triangle formed by vectors veca and vecb is A, then what is the value of 4A^(2) ?

Let veca, vecb, vecc be three unit vectors such that veca. vecb=veca.vecc=0 , If the angle between vecb and vecc is (pi)/3 then the volume of the parallelopiped whose three coterminous edges are veca, vecb, vecc is

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

Let vea, vecb and vecc be unit vectors such that veca.vecb=0 = veca.vecc . It the angle between vecb and vecc is pi/6 then find veca .

Let veca , vecb , vecc be three unit vectors such that |veca + vecb +vecc| =1 and veca bot vecb , " if " vecc makes angles delta beta " with " veca, vecb respectively, then cos delta + cos beta is equal to