please solve this property..... step by step.... please
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joycekphilip91:
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to prove =AC^2=AB^2+BC^2
proof= from triangle ABD andABC
ad is perpendicular to bc
AD÷AB=AB÷AC
AD×AC=AB^2 -------- 1
from triangle BDC and ABC
CD÷BC= BC÷AC
AC×BD=BC^2 ----- 2
adding 1 and 2
AD×AC+AC×CD =AB^2+BC^2
AC (AD×CD)=AB^2+ BC^2
AC×AC=AB^2+BC^2
AC^2=AB^2 +BC^2
hence proved
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