Pre-Calc/Trig Unit 3: Analytic Trig and Applications/5.6 Half-Angle Identities Use an identity to write the expression as a single trigonometric function ... Use an identity to write the expression as a single trigonometric function or as a single number.

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]]> Incorrect.  Did you choose the Half-Angle identity for sin ?

]]> tan 23°

]]> Incorrect.  Did you choose the Half-Angle identity for sin ?

]]> sin 23°

]]> Correct

]]> cos 23°

]]> Incorrect.  Did you choose the Half-Angle identity for sin ?

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