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OpenStudy (anonymous):
Find the direction angle for v = <1, 4>. 14° 76° 104° 256°
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OpenStudy (anonymous):
|v| = √(x² + y²) = √ ( (1)² + (4)² ) =
OpenStudy (anonymous):
arctan (1/ 4)=
OpenStudy (anonymous):
14.04
OpenStudy (anonymous):
and then I need to find the quadrant
OpenStudy (tkhunny):
|dw:1429484746151:dw| Does that look like 14º?
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OpenStudy (anonymous):
so would it be 104?
OpenStudy (anonymous):
104º
OpenStudy (tkhunny):
|dw:1429484885701:dw| Try to pay better attention. Vertical is 90º. Is it past that? BTW \(atan(4) = \) what?
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