Use the Value of the Trigonometric Function to Find $\cos ( t + \pi )$

question 36

Multiple Choice

Use the value of the trigonometric function to find $\cos ( t + \pi )$ .​ $\cos t = \frac { 7 } { 8 }$ ​

• A) \(\cos ( t + \pi ) = \frac { 7 } { 8 }\)
• B) \(\cos ( t + \pi ) = - \frac { 8 } { 7 }\)
• C) \(\cos ( t + \pi ) = \infty\)
• D) \(\cos ( t + \pi ) = \frac { 8 } { 7 }\)
• E) \(\cos ( t + \pi ) = - \frac { 7 } { 8 }\)

---

Definitions:

Assembly Rate

The speed or rate at which a product is assembled, which can affect production efficiency and output.

Direct Labor Hours

The total hours worked by employees directly involved in the manufacturing process of a company's products.

Finishing Rate

The pace at which a production process or construction project is completed, often measured in units per hour or days per project phase.

Machine Hours

A measure of the amount of time a machine is operated, used in cost accounting to allocate expenses to products.