96.Show that the points A (6. – 7, 0) B (16, – 19, – 4). C (0, 3, – 6), D (2, – 5, 10) are such that AB and CD intersect at the point P (1, – 1, 2).
We are given the points A (6, – 7, 0), B (16, – 19, – 4), C (0, 3, – 6),  D (2, – 5. 10), P (1, – 1, 2). Â
Again                       Â
77 Views
Advertisement
97.The vectors of magnitude a, 2a, 3a meet at a point and their directions arc. along the diagonals of three adjacent faces of a cube. Determine the magnitude of their resultant.
263 Views
Short Answer Type
98.Write all the unit vectors in XY-plane.
149 Views
Advertisement
99.Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis.
91 Views
Long Answer Type
100.A girl walks 4 km towards west, then she walks 3 km in a direction 30° east of north and stops. Determine the girl’s displacement from her initial point of departure.
Short Answer Type
 and hence calculate its direction cosines.
Long Answer Type
 are 
 and 
, find the direction ratios of 
 is equally inclined to the axes OX. OY and OZ. 
Switch
