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CBSE XII
>>
Math
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Inverse Trigonometric Functions
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Q)
If
a
1
,
a
2
,
a
3
,
.
.
.
.
.
.
a
n
is an arithmetic progression with common difference d,then evaluate the following expression
tan
(
tan
−
1
(
d
1
+
a
1
a
2
)
+
tan
−
1
(
d
1
+
a
2
a
3
)
+
tan
−
1
(
d
1
+
a
3
a
4
)
+
.
.
.
.
.
.
.
.
+
tan
−
1
(
d
1
+
a
n
−
1
a
n
)
)
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