Teaching AWES Army Public School TGT Mock Test 2024 Mathematics Three Dimensional Geometry Distance from a Plane
Let a, b∈R. If the mirror image of the point P(a, 6, 9) with respect to the line (x – 3)/7 = (y – 2)/5 = (z – 1)/(-9) is (20, b, -a -9), then |a + b| is equal to:
1
86
2
88
3
84
4
90