[" If the con ondinates of "A" and "B" be "(1,2,3)" and "(7,8,7)" ,then the projection "],[[" AB on the co-ordinate axes are ",],[" (A) "6,6,4," (B) "4,6,4," (C) "3,3,2]]

If the co-ordinates of A and B be (1,2,3) and (7,8,7) .then the projections of the line segment AB on the co-ordinate axes are

If projections of as line on x,y and z axes are 6,2 and 3 respectively, then directions cosines of the lines are (A) (6/2,2/7,3/7) (B) (3/5,5/7,6/7) (C) (1/7,2/7,3/7) (D) none of these

If projections of as line on x,y and z axes are 6,2 and 3 respectively, then directions cosines of the lines are (A) (6/2,2/7,3/7) (B) (3/5,5/7,6/7) (C) (1/7,2/7,3/7) (D) none of these

Find the projection of a vector i+3j+7k on the vector 7i-j+8k .

If A = {1,3,5,7} and B = {1,2,3,4,5,6,7,8}, then the number of one-to-one functions from A into B is

If A = {1,2,3,4,5,6,7} and B = {7,8,9,10} , then A-B equals :

If A= {1,3,5,7} and B= {1,2,3,4,5,6,7,8} , then the number of one-to-one functions from A into B is

If A={1,2,3,4,5,6,7,8} and B={1,3,4,6,7,8,9} then

Let A=[(3,7),(2,5):}] and B=[(6,8),(7,9):}] then verify that (AB)^-1 =B^-1 A-1

If A={:[(1,2),(3,4)]:}andB={:[(5,6),(7,8)]:} , then find 3A+7B.