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Mathematics
Mathematics
Problem
The diagonals
A
C
AC
A
C
and
B
D
BD
B
D
of a parallelogram
A
B
C
D
ABCD
A
B
C
D
intersect each other at the point
O
O
O
. If
∠
D
A
C
=
32
∘
\angle DAC = 32^\circ
∠
D
A
C
=
3
2
∘
and
∠
A
O
B
=
70
∘
\angle AOB = 70^\circ
∠
A
O
B
=
7
0
∘
, then
∠
D
B
C
\angle DBC
∠
D
B
C
is equal to _____. (A)
38
∘
38^\circ
3
8
∘
(B)
86
∘
86^\circ
8
6
∘
(C)
24
∘
24^\circ
2
4
∘
(D)
32
∘
32^\circ
3
2
∘
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