JEE Advance - Mathematics (1998 - No. 44)

If in a triangle $$PQR$$, $$\sin P,\sin Q,\sin R$$ are in $$A.P.,$$ then

the altitudes are in $$A.P.$$

the altitudes are in $$H.P.$$

the medians are in $$G.P.$$

the medians are in $$A.P$$