How to calculate slope of line by direction cosines?
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In analytic geometry, the direction cosines (or directional cosines) of a vector are ... Direction cosines are an analogous extension of the usual notion of slope to higher dimensions.
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To calculate the slope of a line you need only two points from that line, (x1, y1) and (x2, y2). The equation used to calculate the slope from two points is: On a graph, this can be represented as: There are three steps in calculating the slope of a straight line when you are not given its equation.
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