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Byju's Answer
Standard XII
Mathematics
Circular Measurement of Angle
In trapezium ...
Question
In trapezium PQRS,
S
i
d
e
P
Q
|
|
s
i
d
e
S
R
A
R
=
5
A
P
A
S
−
5
A
Q
, then prove that
S
R
=
5
P
Q
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Solution
REF.Image
PQ||RS
∠
Q
P
A
=
∠
A
S
R
∠
Q
R
A
=
∠
A
R
S
∠
P
A
Q
=
∠
S
A
R
AAA similarity Theorem
Δ
A
P
Q
∼
Δ
A
R
S
⇒
A
P
A
R
=
P
Q
S
R
=
A
Q
A
S
AR=5AP
⇒
A
P
5
A
R
=
P
Q
S
R
⇒
1
5
=
P
Q
S
R
⇒
S
R
=
5
P
Q
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Q.
Given : In trapezium PQRS, side PQ || side SR, AR = 5AP, AS = 5AQ then prove that, SR = 5PQ