k = ( 2, -3 ,3 ) ; L = ( 3, -2 , -4 ) sudut = ( K , L ) = ... °
Matematika
Rxfsh
Pertanyaan
k = ( 2, -3 ,3 ) ; L = ( 3, -2 , -4 ) sudut = ( K , L ) = ... °
1 Jawaban
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1. Jawaban ErikCatosLawijaya
Mapel : Matematika
Kelas : X SMA
Bab : Vektor
Pembahasan :
K . L = |K| |L| Cos β
[2 - 3 3] [3 -2 4] = √22 √29 Cos β
6 + 6 + 12 = √638 Cos β
24 = √638 Cos β
Cos β = 24/25
Cos β = 0,9...
Cos β = 1
β = 0°
Angkanya jelek bgt....