Jawaban:
1. CBD = ½ x COD (karena sama - sama menghadap busur CD)
maka CBD = ½ x 58 = 29⁰
2. 6x -20 = 2 . 80
6x -20 = 160
6x = 160+20
6x = 180
x = 180: 6
x = 30⁰
DOE = 6x -20 = (6 . 30) - 20
DOE = 180 - 20 = 160⁰
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Jawaban:
1. CBD = ½ x COD (karena sama - sama menghadap busur CD)
maka CBD = ½ x 58 = 29⁰
2. 6x -20 = 2 . 80
6x -20 = 160
6x = 160+20
6x = 180
x = 180: 6
x = 30⁰
DOE = 6x -20 = (6 . 30) - 20
DOE = 180 - 20 = 160⁰