Write the Product as a Sum or Difference of Trigonometric $\cos 38 ^ { \circ } \sin 23 ^ { \circ }$

question 230

Multiple Choice

Write the product as a sum or difference of trigonometric functions.
- $\cos 38 ^ { \circ } \sin 23 ^ { \circ }$

• A) \(\frac { 1 } { 2 } \left( \cos 61 ^ { \circ } + \cos 15 ^ { \circ } \right)\)
• B) \(\frac { 1 } { 2 } \left( \cos 61 ^ { \circ } - \cos 15 ^ { \circ } \right)\)
• C) \(\frac { 1 } { 2 } \left( \sin 61 ^ { \circ } - \sin 15 ^ { \circ } \right)\)
• D) \(\frac { 1 } { 2 } \left( \sin 61 ^ { \circ } + \sin 15 ^ { \circ } \right)\)

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Definitions:

Temporal Summation

Summation of the local potential that results when two or more action potentials arrive at a single synapse in rapid succession.

Action Potentials

Electrical impulses that travel along the membrane of a neuron signaling the cell to perform its function.

Synapse

The junction between two nerve cells, where electrical signals are transmitted from one neuron to another.

Sensory Neurons

Nerve cells responsible for converting external stimuli from the organism's environment into internal electrical impulses.