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A straight line L on the xy-plane bisect...

A straight line `L` on the xy-plane bisects the angle between `O Xa n dO Ydot` What are the direction cosines of `L ?` a. `((1//sqrt(2)),(1//sqrt(2)),0)` b. `((1//2),(sqrt(3)//2),0)` c. `(0,0,1)` d. (2/3, 2/3, 2/3)

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CENGAGE PUBLICATION-THREE DIMENSIONAL GEOMETRY-All Questions
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