If `veca,vecb,vecc` are mutually perpendicular vectors each of magnitude 3 then `|veca+vecb+vec|` is equal (A) 3 (B) 9 (C) `3sqrt(3)` (D) none of these

If veca,vecb,vecc are mutually perpendicular vectors of equal magnitude show that veca+vecb+vecc is equally inclined to veca, vecb and vecc

If veca , vecb , vecc are three mutually perpendicular unit vectors, then prove that ∣ ​ veca + vecb + vecc | ​ = sqrt3 ​

If veca,vecb are any two perpendicular vectors of equal magnitude and |3veca+4vecb|+|4veca-3vecb|=20 then |veca| equals :

If veca,vecb, vecc are unit coplanar vectors then the scalar triple product [2veca-vecb, 2vecb-c ,vec2c-veca] is equal to (A) 0 (B) 1 (C) -sqrt(3) (D) sqrt(3)

If veca,vecb,vecc are three unit vectors such that veca+vecb+vecc=0, then veca.vecb+vecb.vecc+vecc.veca is equal to (A) -1 (B) 3 (C) 0 (D) -3/2

if veca,vecb and vecc are mutally perpendicular vectors of equal magnitudes, then find the angle between vectors and veca+ vecb+vecc .

If veca is perpendicuar to vecb and vecc |veca|=2, |vecb|=3,|vecc|=4 and the angle between vecb and vecc is (2pi)/3, then [veca vecb vecc] is equal to (A) 4sqrt(3) (B) 6sqrt(3) (C) 12sqrt(3) (D) 18sqrt(3)

If veca,vecb,vecc are three mutually perpendicular vectors, then the vector which is equally inclined to these vectors is (A) veca+vecb+vecc (B) veca/|veca|+vecb/|vecb|+vec/|vecc| (C) veca/|veca|^2+vecb/|vecb|^2+vecc/|vecc|^2 (D) |veca|veca-|vecb|vecb+|vecc|vecc

veca, vecb ,vecc are three non zero vectors no two of which are collonear and the vectors veca + vecb be collinear with vecc,vecb+vecc to collinear with veca then veca+vecb+vecc the equal to ? (A) veca (B) vecb (C) vecc (D) None of these

If veca,vecb and vecc are three mutually perpendicular unit vectors and vecd is a unit vector which makes equal angle with veca,vecb and vecc , then find the value of |veca+vecb+vecc+vecd|^(2) .