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Jika ∣ a ∣ = 3 , ∣ b ∣ = 10 dan sudut antara a ⇀ dan b ⇀ adalah 3 0 ∘ . Nilai a ⇀ . b ⇀ adalah ....

Jika dan sudut antara . Nilai adalah ....

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A. Acfreelance

Master Teacher

Mahasiswa/Alumni UIN Walisongo Semarang

Jawaban terverifikasi

Jawaban

Nilai

Nilai straight a with rightwards harpoon with barb upwards on top. straight b with rightwards harpoon with barb upwards on top space equals 15 square root of 3

Pembahasan

Jadi Nilai

table attributes columnalign right center left columnspacing 0px end attributes row cell straight a with rightwards harpoon with barb upwards on top. straight b with rightwards harpoon with barb upwards on top space end cell equals cell open vertical bar straight a with rightwards harpoon with barb upwards on top close vertical bar cross times open vertical bar straight b with rightwards harpoon with barb upwards on top close vertical bar cross times cos 30 degree end cell row blank equals cell 3 cross times 10 cross times 1 half square root of 3 end cell row blank equals cell 15 square root of 3 end cell end table

Jadi Nilai straight a with rightwards harpoon with barb upwards on top. straight b with rightwards harpoon with barb upwards on top space equals 15 square root of 3

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