Question

1. Please refer to figure 1. The X and Y axes are defined and origin of the coordinate system is at point O. Find Coordinates of points A, B and C. Distance OA 280 mm; )B 600 mm and OC 450 mnm 30バ 60X) tnin Points A, B 4 c. 3e 2. Please refer to figure 2. The X,Y & Z axes are defined and origin of the coordinate system is at point O. Find Coordinates of points A, B, C and D. The distance EC is 4.8 m and CD is 3 m. Z axis divided EC in equal half at origin and X axis divides CD in equal half at the origin OB-2.4 m ave shouon Fmd Points ,8,cf D. 24 n in 1.5 m orgin

Answer 1

The co-ordinates of a point are defined as

for a 2-Dimensional system

a) X- co-ordinate = It is the perpendicular distance from the Y-axis to the point

b) Y- co-ordinate = It is the perpendicular distance from the X-axis to the point

for a 3-Dimensional system

a) X- co-ordinate = It is the perpendicular distance from the Y-axis as well as Z-axis to the point

b) Y- co-ordinate = It is the perpendicular distance from the X-axis as well as Z-axis to the point

c)Z- co-ordinate = It is the perpendicular distance from the X-axis as well as Y-axis to the point

1) co ordinates of point A = (0,280), co ordinates of point B = (0,-600), co ordinates of point C = (450,0).

2) co ordinates of point A = (0,4,0), co ordinates of point B = (-2.4, 0, 0)

co ordinates of point C = (2.4, 0, 1.5) , co ordinates of point D = (2.4, 0, -1.5)