if p,q are the perpendicular from the origin to the lines x sec alpha+y cosec alpha=a and x cos alpha-y sin alpha cos 2alpha then show 4p^2+q^2=a^2

if p,q are the perpendicular from the origin to the lines x sec alpha+

1.	if p,q are the perpendicular from the origin to the lines x sec alpha+y cosec alpha=a and x cos alpha-y sin alpha cos 2alpha then show 4p^2+q^2=a^2
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if p,q are the perpendicular from the origin to the lines x sec alpha+y cosec alpha=a and x cos alpha-y sin alpha cos 2alpha then show 4p^2+q^2=a^2​

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if p,q are the perpendicular from the origin to the lines x sec alpha+y cosec alpha=a and x cos alpha-y sin alpha cos 2alpha then show 4p^2+q^2=a^2