If H is the orthocentre of a triangle ABC, then the radii of the circle circumscribing the triangles `BHC,CHA and AHB` are respectively equal to

If H is the orthocentre of a triangle ABC, then the radii of the circle circumscribing the triangles B H C ,C H Aa n dA H B are respectively equal to: a, R,R,R b. sqrt(2)R ,sqrt(2)R ,sqrt(2)R c. 2R ,2R ,2R d. R/2, R/2, R/2

If H is the orthocentre of the Delta ABC, then find AH.

H is orthocenter of the triangle ABC, then AH is equal to :

H is orthocenter of the triangle ABC, then AH is equal to :

H is orthocenter of the triangle ABC, then AH is equal to :

If H is the orthocentre of f Delta ABC, then : sin(angle BHC)=