Inverse Trigonometric Functions

Section: Mathematics
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Question : 6 of 14
 
Marks: +1, -0
The value of
sec−1(‌‌
1
4
‌
10
∑
k=0
sec(‌‌
7Ï€
12
+‌‌
kπ
2
)
‌sec
(‌‌
7Ï€
12
+‌‌
(k+1)Ï€
2
)
)
In the interval [−‌‌
Ï€
4
,‌‌
3Ï€
4
]
equals____
[JEE Adv 2019 P2]
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