Question

Questions
1. (a) What is unit vector ? Show that a unit vector in three dimensions can be expressed as
 = î cos (A, x)+ſ cos (A,y)+ † cos (A, z).
(b) If vector à makes angles a , ß and y respectively with the X, Y and Z axes of a
cartesian coordinate system, prove that cos? q + cos² B + cos² y = 1. (Agra 1980)
)​

Answer 1

1. In mathematics,a unit vector in a normed vector space vector(often a spatial vector) of length 1. A unit vector is often denoted by a lowercase letter with a circumflex,or hat