Is this sum to product identity correct? $$\text{sin}{(150^{\circ})}-\text{sin}{(135^{\circ})} = 2 \text{sin}{( \frac{(150^{\circ} - 135^{\circ})}{2})} \text{cos}{( \frac{(150^{\circ} + 135^{\circ})}{2})} $$

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

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 (Degrees)

Is this sum to product identity correct?

\text{sin}{(210^{\circ})}-\text{sin}{(45^{\circ})} = 2 \text{sin}{( \frac{(210^{\circ} - 45^{\circ})}{2})} \text{cos}{( \frac{(210^{\circ} + 45^{\circ})}{2})}

Earned ?