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If x/alpha+y/beta=1 touches the circle x...

If `x/alpha+y/beta=1` touches the circle `x^2+y^2=a^2` then point `(1/alpha , 1/beta)` lies on (a) straight line (b) circle (c) parabola (d) ellipse

A

. straight line

B

circle

C

parabola

D

ellipse

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The correct Answer is:
B
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