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AP and TS EAMCET Engineering Model Paper 19
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© examsnet.com
Question : 2
Total: 160
If a, b, c are the sides of ΔABC and
a
x
2
+
b
x
+
c
=
0
,
3
x
2
+
4
x
+
5
=
0
has a common root then ∠C =
30°
60°
90°
45°
Validate
Solution:
Roots of
3
x
2
+
4
x
+
5
=
0
are imaginary
∴
Δ
<
0
∴
a
3
=
b
4
=
c
5
∴
∠
C
=
90
°
© examsnet.com
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