tolong jawab nomor 7 [tex]a.12 \sqrt{2} cm \\ b.24 \sqrt{3} cm \\ c.12 \sqrt{3} cm \\ d.12cm[/tex]
Matematika
Rafaaulia1504
Pertanyaan
tolong jawab nomor 7
[tex]a.12 \sqrt{2} cm \\ b.24 \sqrt{3} cm \\ c.12 \sqrt{3} cm \\ d.12cm[/tex]
[tex]a.12 \sqrt{2} cm \\ b.24 \sqrt{3} cm \\ c.12 \sqrt{3} cm \\ d.12cm[/tex]
2 Jawaban
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1. Jawaban herna34
gunakan rumus sinus
a/sina : b/sinb : c/sinc
AB/sin30 : BC/sin90
AB/(1/2) : 24 / 1
AB = 1/2 . 24
AB = 12 cm -
2. Jawaban NN25
[tex]cos \: 60 = \frac{ab}{bc} \\ \frac{1}{2} = \frac{ab}{24cm} \\ 2 \times ab = 1 \times 24cm \\ ab = \frac{24cm}{2} \\ ab = 12cm[/tex]
Jadi panjang ab untuk soal no. 7 adalah 12 cm