Jawaban:
5. Diketahui :
- BAD = 50°
- CBD = 145°
Ditanya :
- ∆ABD termasuk segitiga :
Jawab :
- ABD :
ABD = 180° - CBD
ABD = 180° - 145°
ABD = 35°
- ADB :
ADB = 180° - BAD - ABD
ADB = 180° - 50° - 35°
ADB = 95°
=> sudut di atas termasuk sudut tumpul ( OPSI B )
6. 3a + ( 5a + 18° ) = 90
8a + 18 = 90
8a = 72
a = 9
5a + 18
45 + 18 = 63° ( OPSI D )
7. 180 = 60 + 3x + 2x
180 = 60 + 5x
5x = 180 - 60
5x = 120
x = 120/5
x = 24 ( OPSI B )
Penjelasan dengan langkah-langkah:
done !
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Jawaban:
5. Diketahui :
- BAD = 50°
- CBD = 145°
Ditanya :
- ∆ABD termasuk segitiga :
Jawab :
- ABD :
ABD = 180° - CBD
ABD = 180° - 145°
ABD = 35°
- ADB :
ADB = 180° - BAD - ABD
ADB = 180° - 50° - 35°
ADB = 95°
=> sudut di atas termasuk sudut tumpul ( OPSI B )
6. 3a + ( 5a + 18° ) = 90
8a + 18 = 90
8a = 72
a = 9
5a + 18
45 + 18 = 63° ( OPSI D )
7. 180 = 60 + 3x + 2x
180 = 60 + 5x
5x = 180 - 60
5x = 120
x = 120/5
x = 24 ( OPSI B )
Penjelasan dengan langkah-langkah:
done !