Find the angle between the vectors A and B if | A + B | = | A - B |
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Hallo friend. | A+B | = underoot A^2 +B^2 + 2ABCOS 90 degree Since cos 90 = 0 | A + B | = underoot A^2 +B^2 Now , | A - B | = underoot A^2 +B^2 -2ABCOS 90 degree. |A-B| = underoot A^2 +B^2 HENCE theta will be 90 degree.
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