Question

The centre of the circle is (3, a) and a point on the circumference is (6, -1). If the radius of the circle is
3 units, find the value of a.


fast​

Answer 1

Answer:

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Answer 2

Answer:

use distance formula

Step-by-step explanation:

√ (6-3) ^ 2+(-1 -a) ^2 = 3

squaring both side

3^ 2+1 +a^ 2+2a = 9

9+1+ a^ 2 +2a = 9

now solve the equation

a^2+2 a+1=0

(a+1)^ 2= o

a= -1

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