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CDS Model Paper 4 Mathematics
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© examsnet.com
Question : 63
Total: 100
There are two circles each with radius
5
cm
. Tangent
A
B
is
26
cm
. The length of tangent
C
D
is:
15
cm
21
cm
24
cm
can't be determined
Validate
Solution:
A
B
=
P
Q
−
26
cm
and
P
O
=
O
Q
=
13
C
M
C
O
=
√
(
P
O
)
2
−
(
P
C
)
2
C
O
=
√
(
13
)
2
−
(
5
)
2
C
O
=
12
cm
C
D
=
2
C
O
=
24
cm
Alternatively:
Solve by using the formula of tangents.
© examsnet.com
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