Is this sum/difference identity correct? $$\text{sin}{(\theta - \beta)} = \text{sin}{(\theta)}\text{cos}{(\beta)} - \text{cos}{(\theta)}\text{sin}{(\beta)} $$

Trigonometry Identities - Sum/Difference Identity True/False (Greek Letter)

Level 1

The topics in this unit focus on mastering the basic trigonometric identities. Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Trigonometry Identities - Sum/Difference Identity True/False (Greek Letter)

Is this sum/difference identity correct?

\text{sin}{(\beta + \gamma)} = \text{sin}{(\beta)}\text{cos}{(\gamma)} + \text{cos}{(\beta)}\text{sin}{(\gamma)}

Earned ?