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

Is this half-angle identity correct?

sin(θ2)=±1+cos(θ)1−cos(θ\text{sin}{(\frac{\theta}{2})} = \pm\sqrt{\frac{1+\text{cos}(\theta)}{1-\text{cos}(\theta}}

?