Question

Let the position vectors of the points P. Q and R are respectively given by 21i+5i-8k, 3j+6k and
-3i+2j+3k. If PQRS is a parallelogram, find the equation of QS in cartesian and vector form.​

Answer 1

Answer:

AC = AB+BC = i+j+k-2i+j+2k = -i+2j+3k

therefore MOD AC = ROOT OVER OF (-1)^2+2^2+3^2=ROOT OVER OF 14

THEREFORE UNIT VECTIR PARALLEL TO DIAGONAL AC OF THE PARALLELOGRAM ABCD IS = AC/MOD AC =1/ ROOT14×(-i+2j+3k

FOR MORE INFORMATION SEE THE ATTACHMENT PROVIDED

Answer 2

Answer:

Dear your answer is given in the attachment.

it will help u