1 Vector Calculations(10pt) Two vectors in 3D cartesian coordiantes. ( = dui +8202 + 8zu3 = [u1. U2, U3]) = [3, 10,-2), v = (10.5, -12.3, 14.8) 1. Calculate lul and lol; 2. Calculate the angle 8 between these two vectors (label the unit: degree or radian); 3. Use the manual calculation method to calculate the cross product of these two vectors (u x), use Python function 'np.cross()' to verfiy the result you get. (hint: pay attention to the sign)