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Diketahui :
α = 30
Ditanyakan : n ?
Dijawab ;
n = (360/α) - 1
= 360/ 30 - 1
= 12 - 1
= 11 bayangan
Nomor 1b.
Diketahui :
n = 10
Ditanyakan : α ?
Dijawab :
n = (360/α) - 1
10 + 1 = 360/α
11 = 360/α
α = 360/11
α = 32,72°