If someone is good at Precalculus or Physics, please help me solve this.

asked Nov 1, 2018 159k views

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Magnitude of vector V =√(3²+7²) = √58

Hence: U= -3/√58 - 7/√58

OR multiply numerator and denominator by √58

U = - (3√58)/58 i - (7√58)/58 j

Dkiselev answered Nov 5, 2018

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