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Question
secondary 3 | A Maths
2 Answers Below
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pls help ty urgent
Date Posted: 1 year ago
Views: 133
y² = (y-8)²
16y = 64
y = 4
(x-2)² + (y-4)² = x² + (y-8)²
(x-2)² = x² + (4-8)²
-4x+4 = 16
x = -3
3² + 4² = 5² =25
circle equation
(x+3)² + (y-4)² = 25 (Ans)
16y = 64
y = 4
(x-2)² + (y-4)² = x² + (y-8)²
(x-2)² = x² + (4-8)²
-4x+4 = 16
x = -3
3² + 4² = 5² =25
circle equation
(x+3)² + (y-4)² = 25 (Ans)
See 2 Answers
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When you're given 3 points, (the origin being the 3rd), use the distance formula of (x1-x2)²+(y1-y2)² and use simultaneous equation on the three points. That way, you can get x and y. Afterwards, find the radius. Remember that the equation is (x-centre x)²+(y-centre y)² = R², not R. To find R, just use the distance formula but with the centre of the point and any point touching the circle. Hope this helps.
Date Posted:
1 year ago
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Hope this helps
Date Posted:
1 year ago
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