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If a,b,c are three vectors such that a =...

If a,b,c are three vectors such that a = b + c and the angle between b and c is `pi // 2`, then (here a = |a|, b = |b|, c = |c|)

A

`a^(2)=b^(2)+c^(2)`

B

`b^(2)=c^(2)+a^(2)`

C

`c^(2)=a^(2)+b^(2)`

D

`2a^(2)-b^(2)=c^(2)`

Text Solution

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The correct Answer is:
A
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