What is the length of the arc subtended by the central angle of 240∘, when such arc is located on the Unit Circle?
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The length of the arc is
4.19
(
2
d
p
)
unit .
Explanation:
The circumference of unit circle
(
r
=
1
)
is
2
⋅
π
⋅
r
=
2
⋅
π
⋅
1
=
2
⋅
π
unit
The length of the arc subtened by central angle of
240
0
is
l
a
=
2
⋅
π
⋅
240
360
≈
4.19
(
2
d
p
)
unit .
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