एक त्रिभुज के दो कोण बराबर हैं और तीसरे कोण की माप 78° है। प्रत्येक अज्ञात कोण की माप क्या है?

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SSC CGL 2022 Tier-I Official Paper (Held On : 09 Dec 2022 Shift 2)
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  1. 50o
  2. 51o
  3. 49o
  4. 52o

Answer (Detailed Solution Below)

Option 2 : 51o
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Detailed Solution

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दिया गया है:
 
कोण 1 = कोण 2
 
कोण 3 = 780
 
प्रयुक्त अवधारणा:
 
त्रिभुज के सभी कोणों का योग 1800 होता है।
 
गणना:
 
माना, कोण 1 = कोण 2 = x
 
अब,
 
x + x + 780 = 1800
 
2x = 180 - 78
 
2x = 102
 
x = 51
 
इसलिए, सही उत्तर '510' है।
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