Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
cos
B
=
12
13
\cos B = \dfrac{12}{13}
cos
B
=
13
12
for an acute angle
B
B
B
, calculate
sin
2
B
+
sec
B
\sin^{2} B + \sec B
sin
2
B
+
sec
B
.
Browse the problem library