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AP EAMCET Engineering 18 Sep 2020 Shift 1 Paper
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© examsnet.com
Question : 40
Total: 160
In a
Δ
A
B
C
,
b
:
c
=
√
3
:
√
2
and the angles
A
,
B
,
C
are in
A
.
P
,
then
∠
A
=
45
°
65
°
55
°
75
°
Validate
Solution:
It is given that in a
△
A
B
C
, angles
A
,
B
,
C
are in
A
P
, so
B
=
60
∘
{
∵
A
+
B
+
C
=
180
∘
}
and it is also given that,
b
c
=
√
3
√
2
⇒
sin
B
sin
C
=
√
3
√
2
⇒
√
3
2
sin
C
=
√
3
√
2
⇒
sin
C
=
1
√
2
⇒
C
=
45
∘
So, angle
A
=
180
∘
−
B
−
C
=
180
∘
−
105
∘
=
75
∘
© examsnet.com
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