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An observer on the top of a tree ,finds ...

An observer on the top of a tree ,finds the angle of depression of a car moving towards the tree to be `30^@` .After 3 minutes this angle becomes `60 ^@`.After how much more time , the car will reach the tree ?

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To solve the problem step by step, we will use trigonometric relationships and the concept of angles of depression. ### Step-by-Step Solution: 1. **Understanding the Problem**: - Let the height of the tree be \( H \). - Let the initial position of the car be point \( D \) and the position after 3 minutes be point \( C \). - The angle of depression from the top of the tree to point \( D \) is \( 30^\circ \). ...
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