x² + y² - 2x - 8y - 10 = 0
x² - 2x + y² - 8y = 10
x² - 2x + 1 + y² - 8y + 16 = 10 + 1 + 16
(x - 1)² + (y - 4)² = 27
pusat (1 , 4) dan r = √27
ket :
d = jarak titik thd pusat lingkaran
s = garis singgung
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x² + y² - 2x - 8y - 10 = 0
x² - 2x + y² - 8y = 10
x² - 2x + 1 + y² - 8y + 16 = 10 + 1 + 16
(x - 1)² + (y - 4)² = 27
pusat (1 , 4) dan r = √27
ket :
d = jarak titik thd pusat lingkaran
s = garis singgung