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Byju's Answer
Standard IX
Mathematics
Theorem 1: Equal Chords Subtend Equal Angles at the Center
In figure 3.8...
Question
In figure 3.80, if
P
Q
=
6
,
Q
R
=
10
,
P
S
=
8
find
T
S
.
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Solution
⇒
Here, we have,
P
S
=
8
,
P
Q
=
6
and
Q
R
=
10
∴
P
R
=
10
+
6
=
16
We know that if the chord of the circle intersect externally then the products of the segments of the chords are equal.
∴
P
S
×
P
T
=
P
Q
×
P
R
⇒
8
×
P
T
=
6
×
16
∴
P
T
=
12
Now,
P
T
=
P
S
+
T
S
⇒
T
S
=
P
T
−
P
S
∴
T
S
=
12
−
8
∴
T
S
=
4
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Q.
In the given figure, if PQ = 6, QR = 10, PS = 8 find TS.