If `|vecA + vecB| = |vecA - vecB|`, then the angle between `vecA and vecB` will be

Explanation

To solve the problem, we start with the given condition:

**Given:**
\[ |\vec{A} + \vec{B}| = |\vec{A} - \vec{B}| \]

### Step 1: Use the formula for the magnitude of vectors
We know that the magnitude of the sum and difference of two vectors can be expressed as:
\[ |\vec{A} + \vec{B}| = \sqrt{|\vec{A}|^2 + |\vec{B}|^2 + 2|\vec{A}||\vec{B}|\cos\theta} \]
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