Find angle between A and B where, (a) `A = 2hati and B =- 6 hati` (b) `A = 6hatj` and `B =- 2hatk` (c) `A = (2hati = 3hatj)` and `B = 4 hatk` (d) `A = 4hati` and `B = (-3hati + 3hatj)` .

Find magnitude of A-2 B +3 C, where, A = 2hati+3hatj, B = hati + hatj and c =hatk.

Find magnitude of A-2 B 3 C, where, A = 2hati+3hatj, B = hati + hatj and c =hatk.

Find the angle between the vectors vec(A) = 2 hati - 4hatj +6 hatk and vec(B) = 3 hati + hatj +2hatk .

Find the angles between the following pairs of vectors: (i) vec(A) = hati + hatj +hatk and vec(B) =- 2hati - hatj - 2 hatk . (ii) vec(A) =- 2hati +2hatj - hatk and vec(B) = 3hati + 6 hatj +2 hatk (iii) vec(A) = 4 hati +6 hatj - 3 hatk and vec(B) =- 2hati - 5hatj +7 hatk

if A = 2hati - 3hatj+7hatk, B = hati + 2hatj and C=hatj - hatk . Find A(BxxC)

if A = 2hati - 3hatj+7hatk, B = hati + 2hatj and C=hatj - hatk . Find A(BxxC)

if A = 2hati - 3hatj+7hatk, B = hati + 2hatj and C=hatj - hatk . Find A(BxxC)

If a = 2 hati + j - 3 hatk , b = hati - 2 hatj + 3hatk , c = - hati + hatj - 4hatk and d = hati + hatj + 2hatk , then (a xx b) xx ( c xx d) =