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LiRa [457]
3 years ago
5

If the sin 30=1/2 the cos 60=

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
8 0
Cos(60) = cos(90 - 30) = sin(30) = 1/2

This should be what you want.
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PLEASE HELP ME!!!!!!!! 
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Angle θ between two vectors is given by, \theta =cos^{-1}( \frac{u
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v=-5(-4)+(-4)(-3)=20+12=32; |u|= \sqrt{ (-5)^{2} + (-4)^{2} } = 
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