Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
If
2
cos
θ
+
2
2
=
3
sec
θ
2 \cos \theta + 2\sqrt{2} = 3 \sec \theta
2
cos
θ
+
2
2
=
3
sec
θ
, where
θ
∈
(
0
,
2
π
)
\theta \in (0, 2\pi)
θ
∈
(
0
,
2
π
)
, then which of the following can be correct? a.
cos
θ
=
1
2
\cos \theta = \frac{1}{\sqrt{2}}
cos
θ
=
2
1
b.
tan
θ
=
1
\tan \theta = 1
tan
θ
=
1
c.
sin
θ
=
−
1
2
\sin \theta = -\frac{1}{\sqrt{2}}
sin
θ
=
−
2
1
d.
cot
θ
=
−
1
\cot \theta = -1
cot
θ
=
−
1
Browse the problem library