HC=√BC^2-BH^2=√34^2-30^2=√265=16
AH=tgBAC*BH=tg45°*30=1*30=30.
AC=AH+HC=30+16=46
S=1/2*BH*AC=1/2*46*30=690
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HC=√BC^2-BH^2=√34^2-30^2=√265=16
AH=tgBAC*BH=tg45°*30=1*30=30.
AC=AH+HC=30+16=46
S=1/2*BH*AC=1/2*46*30=690