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Byju's Answer
Standard XII
Mathematics
First Derivative Test for Local Maximum
If the produc...
Question
If the product
(
sin
1
∘
)
(
sin
3
∘
)
(
sin
5
∘
)
(
sin
7
∘
)
.
.
.
.
.
.
.
.
.
(
sin
89
∘
)
=
1
2
n
,
then find the value of n.
Open in App
Solution
sin
1
∘
sin
3
∘
sin
5
∘
.
.
.
.
.
.
.
.
.
sin
89
∘
=
1
2
n
⇒
sin
1
∘
sin
2
∘
sin
3
∘
.
.
.
.
.
sin
88
∘
sin
89
∘
sin
2
∘
sin
4
∘
sin
6
∘
.
.
.
.
.
sin
88
∘
=
1
2
n
⇒
sin
1
∘
sin
89
∘
sin
2
∘
sin
88
∘
.
.
.
.
sin
44
∘
sin
(
46
)
∘
⋅
sin
45
∘
sin
2
∘
sin
4
∘
sin
6
∘
.
.
.
.
.
sin
88
∘
=
1
2
n
⇒
sin
1
∘
sin
(
90
−
1
)
∘
sin
2
∘
sin
(
90
−
2
)
∘
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
sin
44
∘
sin
(
90
−
44
)
∘
⋅
sin
45
∘
sin
2
∘
sin
4
∘
sin
6
∘
.
.
.
.
.
.
.
.
.
sin
88
∘
=
1
2
n
⇒
sin
1
∘
cos
1
∘
sin
2
∘
cos
2
∘
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
sin
44
∘
cos
44
∘
⋅
sin
45
∘
sin
2
∘
sin
4
∘
sin
6
∘
.
.
.
.
.
.
.
.
.
sin
88
∘
=
1
2
n
...........
cos
A
=
sin
(
90
˚
−
A
)
⇒
sin
2
∘
sin
4
∘
.
.
.
.
.
.
.
.
.
.
.
sin
88
∘
⋅
sin
45
∘
2
44
(
sin
2
∘
sin
4
∘
.
.
.
.
.
.
.
.
.
.
.
sin
88
∘
=
1
2
n
...............
[
∵
sin
2
x
=
2
sin
x
cos
x
]
⇒
1
2
44
√
2
=
1
2
n
∴
n
=
44
1
2
=
89
2
Suggest Corrections
0
Similar questions
Q.
The value of
sin
1
∘
+
sin
3
∘
+
sin
5
∘
+
sin
7
∘
cos
1
∘
cos
2
∘
sin
4
∘
is
Q.
The value of expression
2
(
sin
1
0
+
sin
2
0
+
sin
3
0
+
.
.
.
.
.
.
.
.
+
sin
89
0
)
2
(
cos
1
0
+
cos
2
0
+
.
.
.
.
.
.
.
+
cos
44
0
)
+
1
equals
Q.
If
1
sin
45
∘
sin
46
∘
+
1
sin
47
∘
sin
48
∘
+
.
.
.
+
1
sin
135
∘
sin
134
∘
=
1
sin
A
∘
and
1
sin
1
∘
sin
2
∘
+
1
sin
2
∘
sin
3
∘
+
.
.
.
+
1
sin
89
∘
sin
90
∘
=
B
sin
1
∘
,
then which of the following is/are correct ?
Q.
The value of
∫
√
sin
3
2
x
sin
5
x
d
x
is
Q.
The value of the expression
2
(
sin
1
∘
+
sin
2
∘
+
sin
3
∘
+
.
.
.
+
sin
89
∘
)
2
(
cos
1
∘
+
cos
2
∘
+
.
.
.
+
cos
44
∘
)
+
1
is
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