# Vector Operations Direction Angles

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Given vector v with /v/ = 4 and direction angle of 45 degrees, write v in the form <a,b>

a= 4cos 45 degrees= 4*.707=2.83

b= 4sin 45 degrees= 4*.707=2.83

vector v (a,b) becomes v(2.83, 2.83)

compute (2*w).(u-v) where w = <-1, 0>

2(2<100)(5<60-4<45)

2*2<180*1.536<102.5

=6.144<282.5 or 6.144<-77.5degrees

vector from equation is it

R(1.33,-6.00)

https://brainmass.com/math/vector-calculus/vector-operations-direction-angles-13789

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The expert examines vector operations direction angles.

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