If |a + b| = |a – b|, then angle between a and b is (a ≠ 0, b ≠ 0)
A. \(\frac{\pi}{3}\)
B. \(\frac{\pi}{6}\)
C. \(\frac{\pi}{4}\)
D. \(\frac{\pi}{2}\)
Answer:D
If |a + b| = |a – b|, then angle between a and b is (a ≠ 0, b ≠ 0)
A. \(\frac{\pi}{3}\) B. \(\frac{\pi}{6}\) C. \(\frac{\pi}{4}\) D. \(\frac{\pi}{2}\)