|a| = 3, |b| = 4, dan cos =60. tentukan a.b
Matematika
anymous9
Pertanyaan
|a| = 3, |b| = 4, dan cos =60. tentukan a.b
1 Jawaban
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1. Jawaban alyhood
cos = a.b/|a||b|
cos 60 = a.b/3.4
1/2 = a.b/12
a.b = 12*1/2
a.b = 6
maaf kl salah