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Mathematics
Mathematics
Problem
4. The angle
7
π
9
\dfrac{7\pi}{9}
9
7
π
radians is equal to how many degrees? a)
70
∘
70^{\circ}
7
0
∘
b)
210
∘
210^{\circ}
21
0
∘
c)
140
∘
140^{\circ}
14
0
∘
d)
280
∘
280^{\circ}
28
0
∘
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