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If in a /\ABC, a,b,c are in A.P. and P(1...

If in a `/_\ABC, a,b,c` are in A.P. and `P_(1),P_(2),P_(3)` are th altitude from the vertices `A,B` and `C`respectively then

A

`P_(1),P_(2),P_(3)` are in A.P.

B

`P_(1),P_(2),P_(3)` are in H.P.

C

`P_(1)+P_(2)+P_(3)le(3R)/(/_\)`

D

`1/(P_(1))+1/(P_(2))+1/(P_(3))le(3R)/(/_\)`

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B, D
bd
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