In a right 
right-angled at C, if D is the mid-point of BC, prove that 
.
We have
∠C=90
and D is the midpoint of BC
LHS=BC2
=(2CD)2
=4CD2
=4(AD2-AC2) =RHS
22
In a right right-angled at C, if D is the mid-point of BC, prove that .
We have
∠C=90 and D is the midpoint of BC
LHS=BC2
=(2CD)2
=4CD2
=4(AD2-AC2) =RHS