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Byju's Answer
Standard XII
Mathematics
Trigonometric Ratios of Compound Angles
If PT is a ta...
Question
If PT is a tangent at T to a circle whose centre is O and
O
P
=
41
c
m
,
O
T
=
9
c
m
, then tength of PT is
A
40
c
m
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B
32
c
m
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C
21
c
m
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D
None
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Solution
The correct option is
A
40
c
m
P
T
2
=
O
P
2
−
O
T
2
⇒
P
T
2
=
41
2
−
9
2
=
1600
P
T
=
40
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Q.
If
P
T
is a tangent at
T
to a circle whose centre is
O
and
O
P
=
17
c
m
,
O
T
=
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c
m
, Find the length of the tangent segment
P
T
.
Q.
In the given figure, PT is a tangent to a circle with centre O. If OT = 6 cm and OP = 10 cm, then the length of tangent PT is
(a) 8 cm
(b) 10 cm
(c) 12 cm
(d) 16 cm