Find the Cosine of the Angle Between the Two Vectors $\langle 1,1,1 \rangle$

question 71

Multiple Choice

Find the cosine of the angle between the two vectors $\langle 1,1,1 \rangle$ and $\langle1,4,3 \rangle$ .

• A) \(8 / \sqrt { 41 }\)
• B) \(8 / \sqrt { 53 }\)
• C) \(8 / \sqrt { 69 }\)
• D) \(8 / \sqrt { 78 }\)
• E) \(4 / \sqrt { 41 }\)
• F) \(4 / \sqrt { 53 }\)
• G) \(4 / \sqrt { 69 }\)
• H) \(4 / \sqrt { 78 }\)

---

Definitions:

Variable Cost

Costs that vary directly with the level of production or output, such as materials and labor costs.

Net Income

The total profit of a company after subtracting all expenses from revenues.

Fixed Costs

Costs that do not change with the level of production or sales, such as rent, salaries, and insurance premiums.

Fixed Costs

Fixed costs are business expenses that do not change with the level of output or sales, such as rent or salaries.