Question

Tentukan persamaan lingkaran yang berpusat di (2,3) serta menyinggung garis g=4x+3y+25=0

Answer 1

Verified answer

Jawab
P(a,b)= (2,3)
r = jarak (2,3) ke garis
r = (2(4) + 3(3)+25) / √(4²+3²)
r =  (8+9+25)/(5)
r = 42/5
(x - a)² +(y-b)² = r²
(x - 2)² +(y-3)² = (42/5)²
25(x -2)² + 25(y-3)² = 1.764