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Mathematics
Mathematics
Problem
In a circle with centre
O
O
O
,
P
A
PA
P
A
and
P
B
PB
P
B
are tangents drawn from an external point
P
P
P
, touching the circle at
A
A
A
and
B
B
B
respectively. If
∠
A
O
B
=
70
∘
\angle AOB = 70^{\circ}
∠
A
O
B
=
7
0
∘
, determine
∠
A
P
B
\angle APB
∠
A
P
B
. a)
90
∘
90^{\circ}
9
0
∘
b)
55
∘
55^{\circ}
5
5
∘
c)
110
∘
110^{\circ}
11
0
∘
d)
70
∘
70^{\circ}
7
0
∘
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