Jawaban:
a.b=|a|.|b| cos a
= 5.6. cos 60 derajat
= 30. 1/2
= 15
maaf kalo salah
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Jawaban:
a.b=|a|.|b| cos a
= 5.6. cos 60 derajat
= 30. 1/2
= 15
maaf kalo salah