95.Show that vector is equally inclined to the axes OX. OY and OZ.
Let
where are angles made by vector with axes.
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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).
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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.
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98.Write all the unit vectors in XY-plane.
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99.Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis.
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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.
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are 
and hence calculate its direction cosines.
and 
, find the direction ratios of 
is equally inclined to the axes OX. OY and OZ. 
are angles made by vector with axes.
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