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Byju's Answer
Standard XII
Mathematics
Trigonometric Ratios of Compound Angles
Find the aver...
Question
Find the average value of
sin
2
∘
,
sin
4
∘
,
sin
6
∘
,
.
.
.
,
sin
180
∘
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Solution
sin
2
+
sin
4
+
.
.
.
sin
180
180
=
1
90
(
sin
2
+
sin
4
+
.
.
.
+
sin
88
+
1
)
=
1
90
⎛
⎝
sin
44.2
2
sin
2
2
sin
(
2
+
43.2
2
)
+
1
⎞
⎠
=
1
90
(
sin
44
sin
45
sin
1
+
1
)
=
1
90
cos
1
sin
1
=
1
90
cot
1
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Q.
The average value of
sin
2
°
,
sin
4
°
,
sin
6
°
,
.
.
.
,
sin
180
°
is