A) 100
B) 50
C) \[50(\sqrt{3}+1)\]
D) \[50(\sqrt{3}-1)\]
Correct Answer: B
Solution :
In \[\Delta PQR\], \[\tan {{30}^{o}}=\frac{PQ}{QR}\] Þ \[\frac{1}{\sqrt{3}}=\frac{h}{50(\sqrt{3}-1)+h}\] Þ \[\sqrt{3}h=50(\sqrt{3}-1)+h\] Þ \[(\sqrt{3}-1)h\] \[=50(\sqrt{3}-1)\] Þ \[h=50\,metre\].You need to login to perform this action.
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