The vector i +x j +3 k is rotated through an angle θ and doubled in magnitude, then it…

Mathematics · JEE Main · NTA Exams — Vector Algebra

1. \(\left\{-\frac{2}{3}, 2\right\}\)
2. \(\left\{\frac{1}{3}, 2\right\}\)
3. \(\left\{\frac{2}{3}, 0\right\}\)
4. {2, 7}

Answer

(A) - 2 3 , 2

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