Solve the Problem $f ( \theta ) = \cos \theta$ And $f ( a ) = - \frac { 1 } { 4 }$

question 332

Multiple Choice

Solve the problem.
-If $f ( \theta ) = \cos \theta$ and $f ( a ) = - \frac { 1 } { 4 }$ , find the exact value of $f ( - a )$ .

• A) \(- \frac { 3 } { 4 }\)
• B) \(\frac { 3 } { 4 }\)
• C) \(\frac { 1 } { 4 }\)
• D) \(- \frac { 1 } { 4 }\)

---

Definitions:

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that is involved in muscle activation, memory, and cognition.

T Tubules

Transverse tubules; system of inward extensions of the muscle fiber plasma membrane.

ATP

The energy necessary for metabolic processes in cells is transported by a molecule called adenosine triphosphate, or ATP.

Action Potential

An electrical signal resulting from depolarization of the plasma membrane in a neuron or muscle cell. Compare with resting potential.