Car Approaching a Tower at Uniform Speed

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Some Applications of Trigonometry

Car Approaching a Tower at Uniform Speed

CBSE Class 10 · Solve it one decision at a time. A wrong pick earns a nudge, never the answer.

Step 1 of 5

The problem

A straight highway leads to the foot of a tower. A man standing at the top of the tower sees a car at an angle of depression of 30∘,30^\circ, approaching at uniform speed. Six seconds later, the depression is 60∘.60^\circ. Find the time taken by the car to reach the foot of the tower.

Step 1 · Your move

From the top of tower TFTF of height hh, the angle of depression of the car at AA is 30∘30^\circ. In right △TFA\triangle TFA, what is ground distance AFAF in terms of hh?

blue: 30°red: 60°h6 sABFT
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