Question

two vectors A and B are such that the magnitude of A-B equals to magnitude of A+B then angle between A and B is please only correct answer

Answer 1

Answer:

Let the angle between two vectors A and B be theta

so

| A+ B | ^2 = |A|^2 + |B|^2 + 2|A| |B| cos(theta)

also

|A-B|^2 = |A|^2 + |B|^2 + 2|A| |B| cos(180 - theta)

cos(theta) = cos(180 - theta)

theta = 180 - theta

2 × theta = 180

theta = 90 degree

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Answer 2

Hola mate

Plz refer to the attachment

Hope it will help you!