Use the Addition Formulas for Sine and Cosine to Simplify $\cos \left( \theta - \frac { \pi } { 3 } \right) + \cos \left( \theta + \frac { \pi } { 3 } \right)$

question 3

Multiple Choice

Use the addition formulas for sine and cosine to simplify the expression. $\cos \left( \theta - \frac { \pi } { 3 } \right) + \cos \left( \theta + \frac { \pi } { 3 } \right)$

• A) \(\sqrt { 3 }\) \(\cos \theta\)
• B) \(\cos \theta\)
• C) \(\frac { 1 } { 3 } \cos \theta\)
• D) 0
• E) 3 \(\cos \theta\)

Understand the sequence and components involved in cell signaling.

Identify the chemical compounds and cells involved in synapse diffusion and cell signaling.

Comprehend the roles of various cell types and molecules in the reception, signal transduction, and response stages of cell signaling.

Grasp the mechanisms of hormone transportation and their effects on target cells.

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