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From: Bob LaMontagne <rlamont@POSTOFFICE.PROVIDENCE.EDU>Hey now this is beginning to approach something like what I had in mind...something operational.
Thanks for bring us back on track! Actually, the reason why I try to emphasize
components and projections is exactly because of the the sin(theta) - cos(theta)
confusion. It's not only students - I've been there myself. I encourage my
students to ONLY use cos(theta) - that is, only use projections through an
adjacent angle - which means they must find the angle to all the relevant axes.