PhysicsEasy202×since 2002Q8381Which of the following relations is true for two unit vector A^\widehat AA and B^\widehat BB making an angle θ\thetaθ to each other?A∣A^+B^∣=∣A^−B^∣tanθ2|\widehat A + \widehat B| = |\widehat A - \widehat B|\tan {\theta \over 2}∣A+B∣=∣A−B∣tan2θB∣A^−B^∣=∣A^+B^∣tanθ2|\widehat A - \widehat B| = |\widehat A + \widehat B|\tan {\theta \over 2}∣A−B∣=∣A+B∣tan2θC∣A^+B^∣=∣A^−B^∣cosθ2|\widehat A + \widehat B| = |\widehat A - \widehat B|cos{\theta \over 2}∣A+B∣=∣A−B∣cos2θD∣A^−B^∣=∣A^+B^∣cosθ2|\widehat A - \widehat B| = |\widehat A + \widehat B|\cos {\theta \over 2}∣A−B∣=∣A+B∣cos2θCheck answerSkip