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If p(1),p(2),p(3) be the perpendicular f...

If `p_(1),p_(2),p_(3)` be the perpendicular from the points `(m^(2),2m)(mm',m+m')and (m^(2),2m')` respectively on the line `x cos alpha + y sin alpha + (sin^(2)alpha)/(cos alpha)=0` then `p_(1),p_(2),p_(3)` are in

A

A.P

B

G.P

C

H.P

D

None of these

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The correct Answer is:
B
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