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NIMCET 2020 Question Paper with solutions
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© examsnet.com
Question : 40
Total: 120
Find the value of
sin
12
°
sin
48
°
sin
54
°
:
1/8
1/6
1/2
1/4
Validate
Solution:
sin
12
°
sin
48
°
sin
54
°
=
1
2
[
(
2
sin
12
°
sin
48
°
)
sin
54
°
]
=
1
2
[
[
cos
36
°
−
cos
60
°
]
sin
54
°
]
=
1
2
[
√
5
−
1
4
−
1
2
]
sin
54
°
=
1
2
[
√
5
+
1
4
]
[
√
5
+
1
4
]
=
1
2
.
1
4
.
1
4
.
4
=
1
8
© examsnet.com
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