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Trigonometry Identities - Double Angle 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.

PracticeWorksheetView

Trigonometry Identities - Double Angle Identity True/False (Greek Letter)

Is this double-angle identity correct?

sin(2⋅α)=2tan(α)1+tan2(α)\text{sin}{(2\cdot\alpha)} = \frac{2\text{tan}(\alpha)}{1+\text{tan}^2(\alpha)}

?