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The rectangular components of a vector lying in xy plane are (n+1) and 1. If coordinate system is turned by 60o , they are n & 3 respectively the value of ‘n’

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answer is 4.

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Detailed Solution

Rotation of co-ordinate system does not change the vector.Hence⇒ n2+2n+1+1 = n2 +9⇒ 2n = 7 ⇒ n = 3.5

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