What is the angle between A and B (vecA+vecB) = (vecA-vecB)`?

Explanation

To find the angle between vectors A and B given the equation \((\vec{A} + \vec{B}) = (\vec{A} - \vec{B})\), we can follow these steps:

### Step 1: Start with the given equation
We have:
\[ \vec{A} + \vec{B} = \vec{A} - \vec{B} \]

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