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Question Number 131860 by aurpeyz last updated on 09/Feb/21

$$whatisthemagnitudeand$$$$direction\left(indegree\right)ofthisvector?$$$$F=-3\times {10}^{-6}i-13.35\times {10}^{-6}j$$$$\left(a\right)282.5^0\left(b\right)78.5^0\left(c\right)82.5^0\left(d\right)78.5^0$$$$\left(e\right)282.5^0$$

Commented by mr W last updated on 09/Feb/21

$$\left(a\right)and\left(e\right)arethesame.$$$$\left(b\right)and\left(d\right)arethesame.$$$$butallwrong!$$$$257.33°$$

Commented by Dwaipayan Shikari last updated on 09/Feb/21

$${tan}^{-1}\frac{-13.35}{-3}=\frac{180}{\pi }{tan}^{-1}(4.43)+180°=257.33°$$

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