∠
A
6
0
.
0
0
°
∠
B
6
0
.
0
0
°
∠
C
6
0
.
0
0
°
T
h
e
t
r
i
a
n
g
l
e
c
o
v
e
r
s
0
.
4
1
3
5
o
f
t
h
e
c
i
r
c
l
e
.