Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
Total number of solutions of
cos
x
=
1
−
sin
2
x
\cos x = \sqrt{1 - \sin 2x}
cos
x
=
1
−
sin
2
x
in
[
0
,
2
π
]
[0, 2\pi]
[
0
,
2
π
]
, is equal to a. 2 b. 3 c. 5 d. None of these
Browse the problem library