Orthocentre

[Crazy Gamer]

In triangle ABC with altitudes  AD,BE and orthocentre H. find angle ABC if BH=AC

[Shirsendu Roy]

since angle HBD=angle CAD

and BH=AC

the two right triangle triangle BHD and triangle ACD are congruent

then HD=CD or angle HCD=45

CH is perpendicular AB then

angle B +angle HCD=90

then angleB=45

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