If `A(0,2,3),B=(2,-1,5)` are two vertices of `Delta ABC` whose orthocentre is `H` .Then distance between the orthocentres of `Delta HAC` and `Delta HBC` is

If A(0,2,3) , B=(2,-1,5) are two vertices of triangle ABC whose orthocentre is H . Then distance between the orthocentres of triangle HAC and triangle HBC is

If A(0,1,2) B(2,-1,3) and C(1,-3,1) are the vertices of a triangle then the distance between circumcentre and orthocentre is

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

The distance between orthocentre and circumcentre of an equilateral triangle is

If PL, QM and RN are the altitudes of triangle PQR whose orthocentre is O, then Q is the orthocentre of the triangle

In Delta ABC if the orthocentre is (1,2) and the circumcenter is (0,0) then centroid of Delta ABC is.

O is the Ortho centre of Delta ABC then A will be Orthocentre

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