Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Which of the following pairs
(
sin
θ
,
cos
θ
)
(\sin\theta,\cos\theta)
(
sin
θ
,
cos
θ
)
can represent an acute angle
θ
\theta
θ
? a)
(
0.7
,
0.7
)
(0.7,\,0.7)
(
0.7
,
0.7
)
b)
(
0.6
,
0.8
)
(0.6,\,0.8)
(
0.6
,
0.8
)
c)
(
0.4
,
0.6
)
(0.4,\,0.6)
(
0.4
,
0.6
)
d)
(
0.45
,
0.9
)
(0.45,\,0.9)
(
0.45
,
0.9
)
Browse the problem library