Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
sin
(
sin
−
1
1
5
+
cos
−
1
x
)
=
1
\sin(\sin^{-1} \frac{1}{5} + \cos^{-1} x) = 1
sin
(
sin
−
1
5
1
+
cos
−
1
x
)
=
1
, then
x
x
x
is equal to (a) 1 (b) 0 (c)
4
5
\frac{4}{5}
5
4
(d)
1
5
\frac{1}{5}
5
1
Browse the problem library