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Question

A is a point on either of two lines y+3|x|=2 at a distance of 43 units from their point of intersection. The coordinates of the foot of perpendicular from A on the bisector of the angle between them are

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Solution

Given : A is a point on either of two lines y+3|x|=2 at a distance of 43 units from their point of intersection.

To find : The coordinates of the foot of perpendicular from A on the bisector of the angle between them.

y+3|x|=2
When x<0,y3x=2
When x0,y+3x=2


Point of intersection of two lines is (0,2)
Distance between the point (0,2) and (23,0) is  (20)2+(23)2=4+43=43
Distance between the point (0,2) and (23,0) is 43
So, the point A will be either (23,0) or (23,0)
Angle bisector of line y+3|x|=2 is Y axis.
Foot of the perpendicular from the point A to the angle bisector is (0,0).

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