What is the angle between the vector `vec( r)=(4hat(i) +8hat(j) +hat(k)) ` and the x-axis ?

The angle theta between the vector vec(p)=hat(i)+hat(j)+hat(k) and unit vector along X-axis is

Find the angle between the vectors vec(a) = hat(i) + hat(j) + hat(k) and vec(b) = hat(i) - hat(j) + hat(k) .

The vector vec(r) , directed along the external bisector of the angle between the vectors vec(a) = 7hat(i) - 4hat(j) + 4hat(k) and vec(b) = 2hat(i) - hat(j) + 2hat(k) with |vec(r)| = 5sqrt6 , is

Find the angle between the vector vec(a) =2 hat(i) + 3hat(j) - 4 hat(k) and vec(b) = 4hat(i) +5 hat(j) - 2hat(k) .

The angle between the vectors : vec(a)=hat(i)+2hat(j)-3hat(k) and 3hat(i)-hat(j)+2hat(k) is :

Find the angle between the vectors : vec(a)=hat(i)+hat(j)-hat(k) " and " vec(b)=hat(i)-hat(j)+hat(k)

What is the angle between the following pair of vectors? vec(A)=hat(i)+hat(j)+hat(k) and vec(B)=-2hat(i)-2hat(j)-2hat(k) .

What is the angle between the following pair of vectors? vec(A)=hat(i)+hat(j)+hat(k) and vec(B)=-2hat(i)-2hat(j)-2hat(k) .