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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
. A point
D
D
D
lies on
B
C
BC
B
C
such that
∠
B
A
D
=
15
∘
\angle BAD = 15^{\circ}
∠
B
A
D
=
1
5
∘
and
∠
C
A
D
=
25
∘
\angle CAD = 25^{\circ}
∠
C
A
D
=
2
5
∘
. Find
∠
B
A
C
\angle BAC
∠
B
A
C
.
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