Jawaban:
B. 106
Penjelasan dengan langkah-langkah:
AOB = 2ADB
AOB = 2 (2x + 3) = 4x + 6
BOC = 2BAC
BOC = 2 (x + 12) = 2x + 24
Perhatikan bahwa AOB dan BOC saling berpelurus !
Dengan demikian, AOB + BOC = 180
4x + 6 + 2x + 24 = 180
6x + 30 = 180
6x = 180 - 30
6x = 150
x = 25
AOB = 4x + 6 = 4(25) + 6 = 100 + 6 = 106
Jadi, AOB = 106 derajat ( B )
106°
Sudut AOB
= 2 . sudut ADB
= 2 . (2x + 3)°
= (4x + 6)°
Sudut BOC
= 2 . sudut BAC
= 2 . (x + 12)°
= (2x + 24)°
Sudut AOB + sudut BOC = 180°
4x + 6° + 2x + 24° = 180°
6x + 30° = 180°
6x = 180° - 30°
x = 150°/6
x = 25°
Besar sudut AOB
= 4x + 6°
= 4 . 25° + 6°
= 100° + 6°
= 106°
Kode Kategorisasi : 8.2.7
Kelas 8
Pelajaran 2 - Matematika
Bab 7 - Lingkaran
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawaban:
B. 106
Penjelasan dengan langkah-langkah:
AOB = 2ADB
AOB = 2 (2x + 3) = 4x + 6
BOC = 2BAC
BOC = 2 (x + 12) = 2x + 24
Perhatikan bahwa AOB dan BOC saling berpelurus !
Dengan demikian, AOB + BOC = 180
4x + 6 + 2x + 24 = 180
6x + 30 = 180
6x = 180 - 30
6x = 150
x = 25
AOB = 4x + 6 = 4(25) + 6 = 100 + 6 = 106
Jadi, AOB = 106 derajat ( B )
Jawaban:
106°
Penjelasan dengan langkah-langkah:
Sudut AOB
= 2 . sudut ADB
= 2 . (2x + 3)°
= (4x + 6)°
Sudut BOC
= 2 . sudut BAC
= 2 . (x + 12)°
= (2x + 24)°
Sudut AOB + sudut BOC = 180°
4x + 6° + 2x + 24° = 180°
6x + 30° = 180°
6x = 180° - 30°
x = 150°/6
x = 25°
Besar sudut AOB
= 4x + 6°
= 4 . 25° + 6°
= 100° + 6°
= 106°
Kode Kategorisasi : 8.2.7
Kelas 8
Pelajaran 2 - Matematika
Bab 7 - Lingkaran