Is this product to sum identity correct? $$\text{sin}{(\theta)}\text{sin}{(\gamma)} = \frac{1}{2} \left[ \text{cos}(\theta + \gamma) + \text{sin}(\theta + \gamma) \right] $$

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

Is this product to sum identity correct?

\text{cos}{(\beta)}\text{sin}{(\theta)} = \frac{1}{2} \left[ \text{sin}(\beta + \theta) + \text{sin}(\beta - \theta) \right]

Earned ?