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Byju's Answer
Standard IX
Mathematics
Relationship between Unequal Sides of Triangle and the Angles Opposite to It.
In Δ ABC, ∠...
Question
In
Δ
A
B
C
,
∠
A
=
100
∘
,
∠
B
=
30
∘
and
∠
C
=
50
∘
,then
A
A
B
>
A
C
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B
A
B
=
A
C
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C
A
B
<
A
C
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D
None of these
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Solution
The correct option is
C
A
B
>
A
C
In any triangle side opposite to the largest angle is the longest side.
Here
∠
A
is largest and side opposite to it is
B
C
∴
B
C
is the longest side.
Then comes
∠
C
and side opposite to it is
A
B
∴
A
B
is the second longest side.
Then comes
∠
B
and side opposite to it is
A
C
∴
A
C
is the shortest side.
So the increasing order of sides is
A
C
<
A
B
<
B
C
⇒
A
B
>
A
C
So option
A
is correct.
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Similar questions
Q.
In ∆ABC, AB = AC and ∠B = 50°. Then, ∠C = __________.