(xii) An observer at point E, which is at a certain distance from the lamp post AB, finds the angle of elevation of top of lamp post from positions C, D and E as α, β and γ. It is given that B, C, D and E are along a straight line. Which of the following condition is satisfied? (a) tanα > tan β (b) tan β < tan γ (c) tan γ > tan α (d) tan α < tan β
