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Given a parallelogram ABCD. If |AB|=a, |...

Given a parallelogram ABCD. If `|AB|=a, |AD|=b, |AC|=c,` then `DB*AB` has the value

A

`1/2(a^(2) - b^(2) +c^(2))`

B

`1/4(a^(2) + b^(2) -c^(2))`

C

`1/3(b^(2) + c^(2) -a^(2))`

D

`1/2(3a^(2) + b^(2)-c^(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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