Question

| vector a + vector b | = | vector a - vector b| then angle between vector a and vector b

Answer 1

Howdy!!

your answer is ---

the angle between vector a and vector b is 90°

SOLUTION
___________

since ,

let angle between them is ∅

|vector a + vectorb| = |vectora - vectorb|

=> a^2 + b^2 + 2abcos∅ = a^2 + b^2 -2abcos∅

=> 4abcos∅ = 0

=> cos∅ = 0

=> cos∅ = cos 90°. [since cos 90° = 0]

=> ∅ = 90°

hope it help you
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