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Byju's Answer
Standard XI
Mathematics
Properties Derived from Trigonometric Identities
3 tan-1a is e...
Question
3
t
a
n
−
1
a
is equal to
A
t
a
n
−
1
3
a
+
a
3
1
+
3
a
2
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B
t
a
n
−
1
3
a
−
a
3
1
+
3
a
2
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C
t
a
n
−
1
3
a
+
a
3
1
−
3
a
2
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D
t
a
n
−
1
3
a
−
a
3
1
−
3
a
2
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Solution
The correct option is
D
t
a
n
−
1
3
a
−
a
3
1
−
3
a
2
3
t
a
n
−
1
a
=
t
a
n
−
1
3
a
−
a
3
1
−
3
a
2
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0
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