Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The value of
sec
[
sin
−
1
(
−
sin
50
π
9
)
+
cos
−
1
cos
(
−
31
π
9
)
]
\sec\left[\sin^{-1}\left(-\sin\frac{50\pi}{9}\right) + \cos^{-1}\cos\left(-\frac{31\pi}{9}\right)\right]
sec
[
sin
−
1
(
−
sin
9
50
π
)
+
cos
−
1
cos
(
−
9
31
π
)
]
is equal to a.
sec
10
π
9
\sec\frac{10\pi}{9}
sec
9
10
π
b.
sec
π
9
\sec\frac{\pi}{9}
sec
9
π
c. 1 d. -1
Browse the problem library