If the projection of a line segment of the x,y and z-axes in 3-dimensional space are 12,4, and 3 respectively, then the length of the line segmetn is (A) 13 (B) 9 (C) 6 (D) 7

The projections of a line segment on the coordinate axes are 12,4,3 respectively. The length and direction cosines of the line segment are

The projections of a line segment on X, Y and Z axes are 12,4 and 3 respectively. The length and direction cosines of the line segment are a. 13; (12)/(13),4/(13),3/(13) b. 19 ;(12)/(19),4/(19),9/(19) c. 11;(12)/(11),(14)/(11),3/(12) d. none of these

The projection of a line segment on the axis 1, 2, 3 respectively. Then find the length of line segment.

If projections of as line on x,y and z axes are 6,2 and 3 respectively, then directions cosines of the lines are (A) (6/2,2/7,3/7) (B) (3/5,5/7,6/7) (C) (1/7,2/7,3/7) (D) none of these

The projection of a line segment on the axis 2, 3, 6 respectively. Then find the length of line segment.

The projection of a directed line segment on the coordinate axes are 12,4,3 . Find its length and direction cosines.

Let AB be a line segment of length 4 with A on the line y = 2x and B on the line y = x . The locus of the middle point of the line segment is

Let AB be a line segment of length 4 with A on the line y = 2x and B on the line y = x . The locus of the middle point of the line segment is

Let AB be a line segment of length 4 with A on the line y = 2x and B on the line y = x . The locus of the middle point of the line segment is

The projections of the segment PQ on the coordinate axes are -9,12,-8 respectively. The direction cosines of the line PQ are (A) -9/sqrt(17),12/sqrt(17),-8/sqrt(17) (B) -9/288,12/289,-8/289 (C) -9/17,12/17,-8/17 (D) none of these