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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
,
A
B
=
A
C
AB = AC
A
B
=
A
C
and
∠
A
=
42
∘
\angle A = 42^\circ
∠
A
=
4
2
∘
. What is
∠
B
\angle B
∠
B
? a)
70
∘
70^\circ
7
0
∘
b)
42
∘
42^\circ
4
2
∘
c)
69
∘
69^\circ
6
9
∘
d)
46
∘
46^\circ
4
6
∘
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