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एक त्रिभुज A B C में ∠C =3∠B=2(∠A+∠B) है। त्रिभुज के तीनो कोण ज्ञात कीजिये।

एक त्रिभुज A B C में ∠C =3∠B=2(∠A+∠B) है। त्रिभुज के तीनो कोण ज्ञात कीजिये। 

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
We can write all angles in terms of A or any other angle
 
C = 3 B
3B = 2A + 2 B
 
Hence
 
B = 2A
C = 6A
Hence
 
As
A+ B + C = 180°
9A = 180 °
A = 20°
 
Now you can calculate all the other angles

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