Use Identities to Find the Indicated Value for Each Angle $\cos 2 \theta = \frac { 4 } { 5 }$

question 446

Multiple Choice

Use identities to find the indicated value for each angle measure.
- $\cos 2 \theta = \frac { 4 } { 5 }$ and $\theta$ terminates in quadrant I Find $\sin \theta$ .

• A) \(\sin \theta = - \frac { \sqrt { 10 } } { 10 }\)
• B) \(\sin \theta = 0\)
• C) \(\sin \theta = \frac { \sqrt { 10 } } { 10 }\)
• D) \(\sin \theta = \sqrt { 10 }\)

---

Definitions:

Ratio

A quantitative relationship between two numbers, showing how many times one value contains or is contained within the other.

Equivalent Sales Increase

A metric that assesses additional revenue by comparing the effects of various marketing or operational initiatives as if they were translated directly into sales.

Profit Margin

A financial metric that represents the percentage of revenue that exceeds the cost of goods sold, indicating the profitability of a company.

Logistics

The management of the flow of goods, information, and resources between the point of origin and the point of consumption in order to meet the requirements of customers or corporations.