`P(1,0,-1), Q(2,0,-3),R(-1,2,0)a n dS(,-2,-1),` then find the projection length of ` vec P Qon vec R Sdot`

p(1,0,-1),Q(2,0,-3),R(-1,2,0) and S(,-2,-1) then find projection lrngth of vec PQ on vec RS

Let P=(1,0,-1)Q=(-1,2,0)R=(2,0,-3)S(3,2,-1) then the length of the component of RS on PQ is

If P=[(0,1,0),(0,2,1),(2,3,0)],Q=[(1,2),(3,0),(4,1)] , find PQ.

Let a=(1,1,-1),b=(5,-3,-3) and c=(3,-1,2) if vec r is collinear with vec c and has length (|vec a+vec b|)/(2) then vec r is equal to

If P(0, 1, 2), Q(4, -2, 1) and R(0, 0, 0) are three points, then anglePRQ is

If P=[[1,2,-3] , [3,-1,2] , [-2,1,3]], Q=[[2,3,1] ,[3,1,2] , [1,2,3]] then find the matrix R such that P+Q+R is a zero matrix

If P(1,2,3) and Q(-1,0,3) are two points then vec(PQ) is equal to

Show thast the points P(1,1,1),Q(0,-1,0),R(2,1,-1) and S(3,3,0) are coplanar.

If vec r=3vec p+4vec q and 2vec r=vec p-3vec q then