Is this sum to product identity correct? $$\text{sin}{(\frac{\pi}{3})}-\text{sin}{(\frac{4\pi}{3})} = -2 \text{sin}{( \frac{2}{(\frac{\pi}{3} )})} \text{cos}{( \frac{(\frac{\pi}{3} - \frac{4\pi}{3})}{2})} $$

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

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 to Product Identity True/False (Radians)

Is this sum to product identity correct?

\text{sin}{(\frac{2\pi}{3})}+\text{sin}{(\frac{7\pi}{4})} = \text{sin}{( \frac{2}{(\frac{2\pi}{3} + \frac{7\pi}{4})})} \text{sin}{( \frac{(\frac{2\pi}{3} - \frac{7\pi}{4})}{2})}

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