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Trigonometry Identities - Half Angle 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.

PracticeWorksheetView

Trigonometry Identities - Half Angle Identity True/False (Degrees)

Is this half-angle identity correct?

cos(60∘2)=±1+cos(60∘)2\text{cos}{(\frac{60^{\circ}}{2})} = \pm\sqrt{\frac{1+\text{cos}(60^{\circ})}{2}}

?