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JEE Main Math Class 11 Trigonometric Functions Questions
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© examsnet.com
Question : 16
Total: 115
The value of
tan
9
∘
−
tan
27
∘
−
tan
63
∘
+
tan
81
∘
is _______ :
[6-Apr-2023 shift 2]
Your Answer:
Validate
Solution:
(
tan
9
∘
+
cot
9
∘
)
−
(
tan
27
∘
+
cot
27
∘
)
1
s
i
n
9
∘
cos
9
∘
−
1
s
i
n
27
∘
cos
27
∘
2
s
i
n
18
∘
−
2
s
i
n
54
∘
2
(
4
)
√
5
−
1
−
2
(
4
)
(
√
5
+
1
)
8
(
√
5
+
1
)
4
−
8
(
√
5
−
1
)
4
2
[
(
√
5
+
1
)
−
(
√
5
−
1
)
]
=
4
© examsnet.com
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