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Zepler [3.9K]
3 years ago
7

Find the magnitude and angle of a vector given the components: Bx = 7, By=-5​

Physics
1 answer:
Arte-miy333 [17]3 years ago
3 0

Answer:

|B|  =  \sqrt{ {B _{x} }^{2} +  {B _{y} }^{2}  }  \\  =  \sqrt{ {7}^{2}  +  {5}^{2} }  \\  =  \sqrt{74}  \\  = 8.6

let \: the \: angle \: be \:  \theta \\  \tan(\theta)  =  \frac{B _{y} }{B _{x} }  \\  \tan( \theta)  =  \frac{ - 5}{7}  \\  \theta =  { \tan }^{ - 1} ( \frac{ - 5}{7} ) \\  = 35.5 \degree

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