THEOREM 2.6 A line / is such that its perpendicular distance ON (O is the origin) from the origin is p and the ray (EQUATION OF STRAIGHT LINE Then the equation of the line I is ON makes angle a with the positive direction of the x-axis (measured in counterclock sense). IN NORMAL xcos a+ ysina = P FORM) Example 2.10 Find the equation of the line whose distance from origin is 2 and the normal ray through origin makes an angle r/4 with the positive direction of the x-axis measured in coun- terclock sense.

2. Determine parametric equations of the line that... 4 a) passes through (-9,8) with slope- 5 b) passes through (3,-5) and is perpendicular to the line =(4,-1)+1(5,7)

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