Mathematics, 07.03.2021 15:10, Yskdl
A circle of center (-3 , -2) passes through the points (0 , -6) and (a , 0). Find a?
Answers: 3
![[0-(-3)]^2 + [-6-(-2)]^2=[a-(-3)]^2 + [0-(-2)]^2](/tpl/images/1175/5853/04804.png)
![[0+3]^2 + [-6+2]^2=[a+3]^2 + [0+2]^2](/tpl/images/1175/5853/3b19b.png)
![[3]^2 + [-4]^2=[a+3]^2 + [2]^2](/tpl/images/1175/5853/e2490.png)
![9 + 16=[a+3]^2 + 4](/tpl/images/1175/5853/2c872.png)
![25=[a+3]^2 + 4](/tpl/images/1175/5853/91a2a.png)
![25-4=[a+3]^2](/tpl/images/1175/5853/5b3a5.png)
![21=[a+3]^2](/tpl/images/1175/5853/ba80b.png)
![[a+3]^2=21](/tpl/images/1175/5853/e1f49.png)
![[a+3]=\pm\sqrt {21}](/tpl/images/1175/5853/3e2be.png)
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A circle of center (-3 , -2) passes through the points (0 , -6) and (a , 0). Find a?...
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