Question

कोण ABC में AB = AC है यदि कोण B = 50 अंश हो तो कोण A का मान ग्यात कीजिए​

Answer 1

Answer:

$angle(a) = 80 \: degree$

Step-by-step explanation:

$in \: triangle \: abc \\ because \: \: \: \: \: ab = ac \\ \\ angle(c) = angle(b) \\ \\ therefore \: \: \: \: angle(b) = angle(c) = 50 \: degree \\ \\ angle(b) + angle(c) + angle(a) = 180 \: \: \: \: \: (angle \: sum \: property) \\ \\ angle(a) + 50 + 50 = 180 \\ \\ angle(a) + 100 = 180 \\ angle(a) = 180 - 100 \\ angle(a) = 80 \: degree.$