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    This is from a STEP question but I'm just having problems understanding the wording...

    Arthur and Bertha stand at a point O on an inclined plane. The steepest line in the plane through O makes an angle Z with the horizontal. Arthur walks uphill at a steady pace in a straight line which makes an angle Y with the steepest line, while Bertha walks uphill at the same speed in a straight line which makes an angle X with the steepest line (and is on the same side as the steepest line).

    Would the steepest line be the equivalent to the x-axis of the plane that is now inclined? So, if I were to hold up a piece of card at an inclined angle to the horizontal to represent the plane, would the steepest line simply be one of the inclined edges?

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    Yeah, any line parallel to the inclined edges will be a 'steepest' line.
 
 
 
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Updated: November 12, 2008

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