Use the half-angle identities to express cos 4C in terms of a function of 8C .
In Problems 8-9, consider the triangle ABC . Express your answers as decimals rounded to the nearest hundredth. If more than one triangle is possible, give all possible answers.

Question

Use the half-angle identities to express  cos 4C  in terms of a function of  8C .
In Problems 8-9, consider the triangle  ABC . Express your answers as decimals rounded to the nearest hundredth. If more than one triangle is possible, give all possible answers.

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The Answer of Use the half-angle identities to express  cos 4C  in terms of a function of  8C .
In Problems 8-9, consider the triangle  ABC . Express your answers as decimals rounded to the nearest hundredth. If more than one triangle is possible, give all possible answers.

Use the Half-Angle Identities to Express Cos 4C