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Coordinate Geometry & Vectors question bank (NIMCET Mathematics & Analytical Aptitude)

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Q1.
For two non-zero vectors a and b, if |a + b| = |a - b|, what is the angle theta between vector a and vector b?

(A)
90 degrees (pi/2 radians)
(B)
0 degrees
(C)
45 degrees (pi/4 radians)
(D)
180 degrees (pi radians)
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