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The condition that the chord xcosalpha+y...

The condition that the chord `xcosalpha+ysinalpha=p=0` of `x^2+y^2-a^2=0` may subtend a right angle at the center of the circle is `a^2=2p^2` (b) `p^2=2a^2` `a=2p` (d) `c^2=a^2(2m+1`

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MCGROW HILL PUBLICATION-CIRCLES AND SYSTEMS OF CIRCLES -EXERCISE (NUMERICAL ANSWER TYPE QUESTIONS )
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