MCQ
यदि $|\vec{a}+\vec{b}|=|\vec{a}-\vec{b}|$, तो $\vec{a}$ और $\vec{b}$ के बीच का कोण है
- A$\frac{\pi}{4}$
- B$\frac{\pi}{6}$
- ✓$\frac{\pi}{2}$
- D$\frac{\pi}{3}$
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