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the circle whose eq. are x2 +y2 +c2=2ax and x2 +y2 +c2-2by=0 will touch another externally if a. 1/b2 +1/c2 =1/a2 b. 1/b2 =1/c2 +1/a2 c. 1/a2 +1/b2 =1/c2

the circle whose eq. are x2 +y2 +c2=2ax and x2 +y2 +c2-2by=0 will touch another externally if


a. 1/b2 +1/c2 =1/a2


b. 1/b2 =1/c2 +1/a2


c. 1/a2 +1/b2 =1/c2

Grade:12

3 Answers

rituparna chakraborty
14 Points
12 years ago

Answer is c)

KAMAL RAWAT
39 Points
12 years ago

HOW?

rituparna chakraborty
14 Points
12 years ago

is it right or not?

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