Izza D
22 April 2024 02:45
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Izza D
22 April 2024 02:45
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Sumber W
Silver
22 April 2024 09:12
1. <AOB = <COD (sudut saling bertolak belakang)
3m + 83° = 12m + 2°
12m - 3m = 83 - 2
9m = 81°
m = 9°
<AOB = 3m + 83°
= 3(9) + 83
= 27° + 83°
= 110°
<AOD = 180° - <AOB
= 180° - 110°
= 70°
Jawaban : B
2. <AOD = <COB
<AOD = <COE + <BOE
10n = 3n + 19° + 4n + 7°
10n = 7n + 26°
10n - 7n = 26°
3n = 26°
n = 26/3 = 8,67°
<DOB = 180° - 10n
= 180° - 10(8,67)
= 180° - 86,7
= 93,3°
<BOE = 4n + 7
= 4(8,67) + 7
= 34,68 + 7
= 41,68°
= 41,7°
<DOE = <DOB + <BOE
= 93,3° + 41,7°
= 135°
Jawaban : D
3. <AOC = <BOD (saling bertolakbelakang)
3m + 26° = 6m + 2°
6m - 3m = 26° - 2°
3m = 24°
m = 8°
<BOD + <BOF + <FOC = 180°
(6m + 2°) + (2n + 14°) + (n + 47°) = 180°
(6(8°) + 2°) + (2n + 14°) + (n + 47°) = 180°
48° + 2° + 2n + 14° + n + 47° = 180°
3n + 111° = 180°
3n = 180° - 111°
3n = 69°
n = 23°
<EOF = <BOE + <BOF
= 90° + 2(23°) + 14°
= 90° + 46° + 14°
= 150°
Jawaban : C
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