Titik A = (8,30°)
Jadi titik A = (4√3 , 4)
Titik B = (4,60°)
Jadi Titik B = (2 , 2√3)
Jarak AB ?
= √(4√3 - 4)² + (2 - 2√3)²
= √(48 - 32√3 + 16) + (4 - 8√3 + 12)
= √80 - 40√3
= 4√5 - 2√3
Jawaban:
AB = 4V(5 - 2V3)
Penjelasan dengan langkah-langkah:
A(8 , 30°)
B(4 , 60°)
A(8 , 30°) => r = 8 , a° = 30°
x = r . cos a°
x = 8 . cos 30°
x = 8 . 1/2 V3
x = 4V3
y = r . sin a°
y = 8 . sin 30°
y = 8 . 1/2
y = 4
Koordinat Cartesius titik A(4V3 , 4)
B(4 , 60°) => r = 4 , b° = 60°
x = r . cos b°
x = 4 . cos 60°
x = 4 . 1/2
x = 2
y = r . sin b°
y = 4 . sin 60°
y = 4 . 1/2 V3
y = 2V3
Koordinat Cartesius titik B(2 , 2V3)
AB^2 = (xB - xA)^2 + (yB - yA)^2
AB^2 = (2 - 4V3)^2 + (2V3 - 4)^2
AB^2 = 4 - 16V3 + 48 + 12 - 16V3 + 16
AB^2 = 80 - 32V3
AB^2 = 16(5 - 2V3)
AB = V[16(5 - 2V3)]
AB = V16 V(5 - 2V3)
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Titik A = (8,30°)
Jadi titik A = (4√3 , 4)
Titik B = (4,60°)
Jadi Titik B = (2 , 2√3)
Jarak AB ?
= √(4√3 - 4)² + (2 - 2√3)²
= √(48 - 32√3 + 16) + (4 - 8√3 + 12)
= √80 - 40√3
= 4√5 - 2√3
Jawaban:
AB = 4V(5 - 2V3)
Penjelasan dengan langkah-langkah:
A(8 , 30°)
B(4 , 60°)
A(8 , 30°) => r = 8 , a° = 30°
x = r . cos a°
x = 8 . cos 30°
x = 8 . 1/2 V3
x = 4V3
y = r . sin a°
y = 8 . sin 30°
y = 8 . 1/2
y = 4
Koordinat Cartesius titik A(4V3 , 4)
B(4 , 60°) => r = 4 , b° = 60°
x = r . cos b°
x = 4 . cos 60°
x = 4 . 1/2
x = 2
y = r . sin b°
y = 4 . sin 60°
y = 4 . 1/2 V3
y = 2V3
Koordinat Cartesius titik B(2 , 2V3)
AB^2 = (xB - xA)^2 + (yB - yA)^2
AB^2 = (2 - 4V3)^2 + (2V3 - 4)^2
AB^2 = 4 - 16V3 + 48 + 12 - 16V3 + 16
AB^2 = 80 - 32V3
AB^2 = 16(5 - 2V3)
AB = V[16(5 - 2V3)]
AB = V16 V(5 - 2V3)
AB = 4V(5 - 2V3)