Mathegoras

Coordinate geometry › Straight lines › Angle of inclination

Parameter for a vertical line

High school · ●○○○○ 10 pts

Given points A(1+a, 2a)A(1+a,\,2a) and B(1−a, 3)B(1-a,\,3), the angle of inclination of line ABAB is 90∘90^\circ. Find aa.

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slope of a line