दिलेल्या आक्रुतीत, ∠BAC = ∠BCD, AB = 32 सेमी आणि BD = 18 सेमी तर BC बाजूची लांबी शोधा.

 

  1. 20 सेमी 
  2. 24 सेमी 
  3. 30 सेमी 
  4. 28 सेमी 

Answer (Detailed Solution Below)

Option 2 : 24 सेमी 
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Detailed Solution

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दिल्याप्रमाणे:

∠BAC = ∠BCD, AB = 32 सेमी आणि BD = 18 सेमी 

संकल्पना:

जर दोन त्रिकोण समान असतील तर संबंधित बाजूंचे प्रमाण समान असते.

 

गणना:

त्रिकोणी ABC आणि CBD मध्ये;

∠BAC = ∠BCD

∠B सामाइक

म्हणूनच, ABC आणि CBD त्रिकोण कोन-कोन सममितीमुळे एकरूप आहेत.

∴ AB/CB = BC/BD

⇒ BC2 = 32 × 18 = 576

⇒ BC = 24 सेमी

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