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if a vector A= i+xj+3k is rotated through an angle and is double the magnitude resulting vector is B =4i+(4x-2)j+2k then what will be the value of x.

anjali , 7 Years ago
Grade 12th pass
anser 2 Answers
vishal kumar

Last Activity: 7 Years ago

even if the vector is rotated the magnitude remains same.
so the new vector magnitude is 2(10+x2)1/2 since we are doubling the magnitude after rotation. now this is equal to magnitude of vector B so solving them we get value of x
Deepak Kumar Shringi

Last Activity: 7 Years ago

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