Vektor
Sudut antara dua vektor a dan b
cos x = a.b / |a|. |b|
*
|a| = 6
|b| = 6
|a+b| = 6√2--> a+ b = (6√2)² = 72
(a + b)² = a² + b² - 2 ab
72 = 6² +6² - 2ab
2ab = 72- 72= 0
ab = 0
cos x = 0/ (6)(6) = 0/36 =0
cos x = 0 = cos 90
x = 90
sudut antara kedua vektor= 90°
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Vektor
Sudut antara dua vektor a dan b
cos x = a.b / |a|. |b|
*
|a| = 6
|b| = 6
|a+b| = 6√2--> a+ b = (6√2)² = 72
*
(a + b)² = a² + b² - 2 ab
72 = 6² +6² - 2ab
2ab = 72- 72= 0
ab = 0
*
cos x = a.b / |a|. |b|
cos x = 0/ (6)(6) = 0/36 =0
cos x = 0 = cos 90
x = 90
sudut antara kedua vektor= 90°