#### Vector

After completion of this chapter, students will be able to:

• know about vector and vector geometry.
• solve the problems of vector.
• solve the theorems of vector geometry.

#### Vector

Let $$\overrightarrow a$$ and $$\overrightarrow b$$ be two and θ the angle between them, then the scalar product between $$\overrightarrow a$$ and $$\overrightarrow b$$ is denoted by $$\overrightarrow a$$. $$\overrightarrow b$$ and is defined as the product of the magnitudes of $$\overrightarrow a$$ and $$\overrightarrow b$$ with the cosine of the angle θ.