1.Two vectors A⃗\vec{A}A and B⃗\vec{B}B have equal magnitudes. The magnitude of (A⃗+B⃗)(\vec{A} + \vec{B})(A+B) is nnn times the magnitude of (A⃗−B⃗)(\vec{A} - \vec{B})(A−B). The angle between A⃗\vec{A}A and B⃗\vec{B}B is:a.cos−1[n2−1n2+1]\cos^{-1}\left[\dfrac{n^2-1}{n^2+1}\right]cos−1[n2+1n2−1]b.sin−1[n−1n+1]\sin^{-1}\left[\dfrac{n-1}{n+1}\right]sin−1[n+1n−1]c.cos−1[n−1n+1]\cos^{-1}\left[\dfrac{n-1}{n+1}\right]cos−1[n+1n−1]d.sin−1[n2−1n2+1]\sin^{-1}\left[\dfrac{n^2-1}{n^2+1}\right]sin−1[n2+1n2−1]Login to continueOnly logged in users canattempt or see the solution.
