Am 23.04.2010 18:58, schrieb Anthony D. Baye:

> Given the following code, theta should contain the angle between cV and rV.
>
> Following a series of manipulations to _cD_ and _cP_,
> _cD_ = 120 and
> _cP_ =<-4, 3, 0>
> this means that mag_rV = 5
> and the angle between cV and rV should be 180 degrees.

Um... do you have any reasoning /why/ that angle should happen to be 180 
degrees?

Likewise, are you sure that _cP_ /is/ <-4,3,0> in the first place? From 
what I see, you're only printing the integer part of any value to the 
debug output, which is not too helpful when trying to debug 
floating-point math.

(Also note that there exists a special function, vstr(), to convert a 
vector to a string.)

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