Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
right-angled at
C
C
C
,
∠
A
=
57
∘
\angle A = 57^{\circ}
∠
A
=
5
7
∘
and
B
C
=
18
BC = 18\,
B
C
=
18
cm. Calculate the length of side
A
C
AC
A
C
correct to one decimal place.
Browse the problem library