[" If "quad P=(0,1,2),Q=(4,-2,1),O=(0,0,0)],[" then "/_POQ=]

If P = (0,1,2) and Q = (4,-2,1), O = (0,0,0) then P hat O Q =

If P = (0, 1, 2), Q = (4, -2, 1), O = (0, 0, 0) then anglePOQ=

If P(0,1,2),Q(4,-2,1) and O(0,0,0) are three points, then /_POQ=

If P(0,1,2),Q(4,-2,1) and O(0,0,0) are three points then POQ=(pi)/(6) b.(pi)/(4) c.(pi)/(3) d.(pi)/(2)

If P(0,1,2),\ Q(4,-2,1)a n d\ O(0,0,0) are three points then angle P O Q= a. pi/6 b. pi/4 c. pi/3 d. pi/2

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

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

If P(0, 1, 2), Q(4, -2, 1) and O(0, 0, 0) are distinct points the manglePOQ = ______.

If P=[(1,2,4),(3,1,0),(0,0,1)], Q=[(1,-2,-3),(-3,1,9),(0,0,-5)] then (PQ)^(-1) equals to