Question

3. In AABC, A = 70° and B = C . Find B.​

Answer 1

Answer:

ANSWER

Since, AB = AC, therefore, ∠B=∠C

By angle sum property of triangle,

∠A+∠B+∠C=180

o

70

o

+2∠B=180

o

2∠B=110

o

∠B=55

o

Hence, ∠B=∠C=55

o

Answer 2

Answer:

angle b is 55 degree

Step-by-step explanation:

$in \: traingle \: abc \\ \\ angle \: a \: + angle \: b \: + angle \: c = 180 \\ \\ 70 + b + b = 180 \: \: \: \: \: (ange \: b = angle \: c)\\ \\ 70 + 2b = 180 \\ \\ 2b = 110 \\ \\ b = 55$