If ` | veca + vecb|=| veca - vecb|` , then what is the angle between ` veca ` and ` vecb ` ?

Explanation

To find the angle between the vectors \(\vec{a}\) and \(\vec{b}\) given that \(|\vec{a} + \vec{b}| = |\vec{a} - \vec{b}|\), we can follow these steps:

### Step 1: Square both sides of the equation
We start with the equation:
\[ |\vec{a} + \vec{b}| = |\vec{a} - \vec{b}| \]
Squaring both sides gives us:
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