किसी मीनार के निचले भाग की ओर जाने वाली एक सड़क पर 3 बिंदु (संरेखीय) A, B और C से मीनार के शीर्ष के उन्नयन कोण क्रमशः 30°, 45° और 60° हैं। तो AB और BC का अनुपात क्या है?

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Option 1 :
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NIMCET 2020 Official Paper
120 Qs. 480 Marks 120 Mins

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संकल्पना:

यदि लम्बाई L वाली मीनार से दूरी D पर एक बिंदु से उन्नयन कोण θ है तो 

tan θ = 

गणना:

माना कि मीनार OP की लम्बाई x है। 

आकृति से, 

OA = 

OB = 

OC = 

∴ AB = OA - OB = 

BC = OB - OC = 

⇒ 

⇒ 

⇒ 

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