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For what angle between A and B, |A+B| = ...

For what angle between A and B, `|A+B| = | A-B | ` .

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To solve the problem, we need to find the angle θ between two vectors A and B such that the magnitudes of the vector sums and differences are equal, i.e., |A + B| = |A - B|. ### Step-by-Step Solution: 1. **Write the Magnitude Expressions**: We start with the expressions for the magnitudes of the vector sums and differences: \[ |A + B| = \sqrt{A^2 + B^2 + 2AB \cos \theta} ...
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