[" 1.A unit vector "a" makes an angle "(pi)/(4)" with "z" -axis.If "],[a+i+j" is a unit vector,then "a" is equal to "]

A unit vector a makes an angle (pi)/(4) with z-axis If a+i+j is a unit vector,then a can be equal to

A unit vector a makes an angle pi/ 4 with z-axis. If a + i + j is a unit vector, then a can be equal to

A unit vector a makes an angle pi/ 4 with z-axis. If a + i + j is a unit vector, then a can be equal to

A unit vector a makes an angle pi/ 4 with z-axis. If a + i + j is a unit vector, then a can be equal to

A unit vector a makes an angle pi/ 4 with z-axis. If a + i + j is a unit vector, then a can be equal to

A unit vector hata makes an angle pi/4 with z-axis, if hata+hati+hatj is a unit vector then hata is equal to

If veca is unit vector in xy-plane making an angle (pi)/(4) with the x-axis, then veca is equal to -

If a unit vector "a" makes an angle "pi"/3 with hat"i"," ""pi"/4 with hat"j" and an acute angle "theta" with hat"k", then find the value of "theta"dot