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A common tangent to 9x^2-16y^2 = 144 an...

A common tangent to `9x^2-16y^2 = 144` and `x^2 + y^2 = 9`, is

A

`y=(3)/(sqrt(7))x+(15)/(sqrt(17))`

B

`y=3 sqrt((2)/(sqrt(17)))x+(25)/(sqrt(7))`

C

`y=2sqrt((3)/(7))x+15sqrt(7)`

D

`y=-3 sqrt((2)/(sqrt(7)))x +(25)/(sqrt(7))`

Text Solution

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The correct Answer is:
B, D
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