If the point x 4 lies on a circle
Asked by admin @ in Math viewed by 312 People
If the point (X,4 ) lies on the circle whose center is at the origin and diameter is 10 find x
please fast urgent
Answered by admin @
As diameter of circle is 10 units
therefore radius = 5
therefore distance between P ( x , 4 ) and origin ( 0 , 0 ) is 5 units
using distance formula:
distance = √[(x1-x2)²+(y1-y2)²]
therefore,
5 = √[(x-0)²+(4-0)²]
5² = x² + 16
25 - 16 = x²
x = √9 = 3
therefore x = 3
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