Jawab:
Lingkaran (x - a)² +(y - b)² = r² dan garis singgung di ( x1, y1)
(x1- a)(x- a)² + (y1 - b)(y -b) = r²
Penjelasan dengan langkah-langkah:
(x + 1)² + (y - 3)² = 34
titik singgung di (a , 2) , sub x = a dany = 2 ke
(a + 1)² + (2 -3)² = 34
(a + 1)² = 33
a+ 1 = +_ √33
a > 0 ,maka a = - 1 + √33
titk singgung (x1, y1) = {(- 1 + √33) , (2) }
Pers gasing ( -1 + √33 +1)(x + 1) + (2 - 3)(y - 3) = 34
√33 (x + 1 ) - 1 ( y - 3) = 34
x√33 + √33 - y + 3 = 34
x√33 - y + 3 - 34 + √33= 0
x√33 - y - 39 + √33 = 0
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Jawab:
Lingkaran (x - a)² +(y - b)² = r² dan garis singgung di ( x1, y1)
(x1- a)(x- a)² + (y1 - b)(y -b) = r²
Penjelasan dengan langkah-langkah:
(x + 1)² + (y - 3)² = 34
titik singgung di (a , 2) , sub x = a dany = 2 ke
(x + 1)² + (y - 3)² = 34
(a + 1)² + (2 -3)² = 34
(a + 1)² = 33
a+ 1 = +_ √33
a > 0 ,maka a = - 1 + √33
titk singgung (x1, y1) = {(- 1 + √33) , (2) }
Pers gasing ( -1 + √33 +1)(x + 1) + (2 - 3)(y - 3) = 34
√33 (x + 1 ) - 1 ( y - 3) = 34
x√33 + √33 - y + 3 = 34
x√33 - y + 3 - 34 + √33= 0
x√33 - y - 39 + √33 = 0