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OCW Scholar - Multivariable Calculus 6 Online
OpenStudy (anonymous):

I'm working on PS-2 part 2, problem 3a. The solution and reasoning imply that "w" makes a right angle with the xy-plane. However, the instructions call for a vector which makes the largest "acute" angle with the xy plane. What am I missing? Problem will be attached.

OpenStudy (anonymous):

OpenStudy (phi):

Here is how I interpret it |dw:1445344398436:dw|

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