Final answer:
Angle naming conventionally uses three letters with the vertex in the middle, or a single letter for the vertex; the angle between vectors is determined by the dot product and inverse cosine.
Step-by-step explanation:
Indicating whether angle B is named correctly is challenging without visual confirmation, as angle naming typically follows certain conventions. Normally, an angle is identified by three letters with the vertex letter in the middle, or simply by a single letter that represents that angle's vertex. For example, the angle could be named ABC or B when referring to its vertex.
Concerning vectors, the angle between vectors A and B is determined mathematically, and one common method is by using the dot product of the vectors. The formula for the dot product is Ax Bx + Ay By + Az Bz, which is part of calculating the cosine of the angle.
The equation provided, Equation 2.34, allows you to find the cosine of the angle between two vectors using their components, and by taking the inverse cosine (arccos), you can find the actual angle size.