If the chord \( x \cos \alpha+y \sin \alpha-p=0 \) of the circle \( x^{2}+y^{2}-a^{2}=0 \) subte...
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If the chord \( x \cos \alpha+y \sin \alpha-p=0 \) of the circle \( x^{2}+y^{2}-a^{2}=0 \) subtends a right angle at the centre of the circle, then \( \frac{a^{2}}{p^{2}} \) is equal to
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