Describe the Graph Using Another Equation $y=\cos \left(x+\frac{\pi}{2}\right)-\cos \left(x-\frac{\pi}{2}\right)$ A) $- 2 \sin x$

question 47

Multiple Choice

Describe the graph using another equation.
- $y=\cos \left(x+\frac{\pi}{2}\right) -\cos \left(x-\frac{\pi}{2}\right)$

• A) \(- 2 \sin x\)
• B) \(- 2 \cos x\)
• C) \(- \sin x\)
• D) \(- \cos x\)

---

Definitions:

Compounded Quarterly

Calculation of interest on an investment or loan on a quarterly basis, leading to interest being added to the principal, which then earns additional interest.

Deposit Monthly

Refers to putting a certain amount of money into a financial account or investment regularly every month.

Goal

An objective or desired result that a person or a system envisions, plans, and commits to achieve.

Compounded Semi-annually

A method of calculating interest in which interest is compounded to the principal amount semi-annually.