Skip to main content\(\newcommand{\R}{\mathbb{R}}
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A pink plane is shown through the x and y axes for a three dimensional plot. A blue arrow is drawn parallel to the z axis and extends from a highlighted point on the pink plane. The highlighted point is labeled
\((a,b,c)\text{.}\) A blue circular arc is drawn around the blue arrow in counteclockwise direction when viewed from the end of the blue arrow toward the pink plane.