TS EAMCET · Maths · Heights and Distances
From a point on the level ground, the angle of elevation of the top of a pole is \(30^{\circ}\) on moving 20 metres nearer, the angle of elevation is \(45^{\circ}\). Then, the height of the pole (in metres), is
- A \(10(\sqrt{3}-1)\)
- B \(10(\sqrt{3}+1)\)
- C \(15\)
- D \(20\)
Answer & Solution
Correct Answer
(B) \(10(\sqrt{3}+1)\)
Step-by-step Solution
Detailed explanation
In \(\triangle B D A\), \(\tan 45^{\circ}=\frac{h}{x} \Rightarrow h=x\) In \(\triangle B A C\),…
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