Let a vertical tower of height stands on a horizontal ground. Let from a point on the ground a man can see upto height of the tower with an angle of elevation . When from , he moves a distance in

Question

Let a vertical tower  of height  stands on a horizontal ground. Let from a point  on the ground a man can see upto height  of the tower with an angle of elevation . When from , he moves a distance  in the direction of , he can see the top  of the tower with an angle of elevation . If , then  is equal to

Canvas Classes · Accepted Answer

🧠 Two Viewing Points, Two Heights — Set Up One Equation in

This question looks complicated, but the structure is standard. There is a tower of height . From a point  on the ground, the man sees up to height  (the middle of the tower) at elevation . He walks back by , and now sees the top (height ) at elevation .

Here is the key habit. When the same student-friendly variable () appears at two different positions, write two right-triangle equations, then eliminate the unknown distance. You wil

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