From a point P, 60 m from the foot of a tower, its top is seen at an elevation of 45°. If the observer climbs a 20 m platform at P, and θ is the new angle of elevation of the top, find tan θ.

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Accepted Answer

2/3. From the 45° sight, the tower is 60 m tall. From 20 m up, the top is 40 m higher across 60 m: tan θ = 40/60 = 2/3.

From a point P, 60 m from the foot of a tower, its top is seen at an elevation of 45°. If the observer climbs a 20 m platform at P, and θ is the new angle of elevation of the top, find tan θ.

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