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If p&q are lengths of perpendicular fro...

If `p&q ` are lengths of perpendicular from the origin `x sin alpha + y cos alpha = a sin alphacos alpha` and `x cos alpha-y sin alpha = acos 2alpha,` then `4p^2 + q^2`

A

`p^(2)+2q^(2)`

B

`4p^(2)+q^(2)`

C

`p^(2)+4q^(2)`

D

`2p^(2)+q^(2)`

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