Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
In a
Δ
A
B
C
\Delta ABC
Δ
A
B
C
, if
b
=
(
3
−
1
)
a
b = (\sqrt{3} - 1)a
b
=
(
3
−
1
)
a
and
∠
C
=
30
∘
\angle C = 30^\circ
∠
C
=
3
0
∘
, then the value of
(
A
−
B
)
(A - B)
(
A
−
B
)
is equal to (All symbols used have usual meaning in the triangle.) a.
30
∘
30^\circ
3
0
∘
b.
45
∘
45^\circ
4
5
∘
c.
60
∘
60^\circ
6
0
∘
d.
75
∘
75^\circ
7
5
∘
Browse the problem library