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Doctors Medicines MCQs Q&A

  1. 30°
  2. 60°
  3. 45°
  4. None of these
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1 Answers

Answer: Option 3

Consider the diagram shown above where QR represents the tree and PQ represents its shadow $$\eqalign{ & {\text{We}}\,{\text{have}},\,QR = PQ \cr & {\text{Let}}\,\angle QPR = \theta \cr} $$ $$\tan \theta = \frac{{QR}}{{PQ}} = 1$$     (since QR = PQ) $$ \Rightarrow \theta = {45^ \circ }$$ i.e., required angle of elevation = 45°

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