For two vectors \( \mathbf{A} \) and \( \mathbf{B},|\mathbf{A}+\mathbf{B}|=|\mathbf{A}-\mathbf{B... VIDEO
For two vectors \( \mathbf{A} \) and \( \mathbf{B},|\mathbf{A}+\mathbf{B}|=|\mathbf{A}-\mathbf{B}| \) is always true, when
(a) \( |\mathbf{A}|=|\mathbf{B}| \neq 0 \)
(b) \( |\mathbf{A}|=|\mathbf{B}| \neq 0 \) and \( \mathbf{A} \) and \( \mathbf{B} \) are parallel or anti-parallel
(c) when either \( |\mathbf{A}| \) or \( |\mathbf{B}| \) is zero
(d) None of the above
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