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Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 5DE
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### Trigonometric Identity Verification

In this step-by-step solution, we will verify a given trigonometric identity.

#### Given Identity:

\[ \cos(\theta + \tan(\theta)) = \cos(\theta) + \sin(\theta) \]

#### Verification Process:

1. **Restate the Given Identity:**
   \[ \cos(\theta + \tan(\theta)) = \cos(\theta) + \sin(\theta) \]

2. **Start with the Left-Hand Side (LHS):**
   \[ \text{LHS} = \cos(\theta + \tan(\theta)) \]
   
   (, employ trigonometric angle addition formulas if necessary or substitute values to verify the identity.)

3. **Compare LHS with Right-Hand Side (RHS):**
   - **RHS:**
     \[ \cos(\theta) + \sin(\theta) \]

   - Ensure that LHS should simplify or match to this expression.

4. Continue the process of proving the identities or simplifying the expression till both sides match.

\[\boxed{}\]

This verification demonstrates the equality and connection between various trigonometric functions.
Transcribed Image Text:### Trigonometric Identity Verification In this step-by-step solution, we will verify a given trigonometric identity. #### Given Identity: \[ \cos(\theta + \tan(\theta)) = \cos(\theta) + \sin(\theta) \] #### Verification Process: 1. **Restate the Given Identity:** \[ \cos(\theta + \tan(\theta)) = \cos(\theta) + \sin(\theta) \] 2. **Start with the Left-Hand Side (LHS):** \[ \text{LHS} = \cos(\theta + \tan(\theta)) \] (, employ trigonometric angle addition formulas if necessary or substitute values to verify the identity.) 3. **Compare LHS with Right-Hand Side (RHS):** - **RHS:** \[ \cos(\theta) + \sin(\theta) \] - Ensure that LHS should simplify or match to this expression. 4. Continue the process of proving the identities or simplifying the expression till both sides match. \[\boxed{}\] This verification demonstrates the equality and connection between various trigonometric functions.
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