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Which statement is true?
A. cosine squared 47 degrees equals Start Fraction 1 plus cosine 94 degrees over 2 End Fraction
B. cosine left parenthesis Start Fraction pi over 4 End Fraction right parenthesis equals plus or minus Start Root Start Fraction 1 plus cosine left parenthesis Start Fraction pi over 8 End Fraction right parenthesis over 2 End Fraction End Root
C. tangent 34 degrees equals Start Fraction 2 tangent 68 degrees over 1 minus tangent squared 68 degrees End Fraction
D. sine left parenthesis Start Fraction pi over 6 End Fraction right parenthesis equals cosine squared left parenthesis left parenthesis Start Fraction pi over 12 End Fraction minus sine squared left parenthesis Start Fraction pi over 12 End Fraction


Which Statement Is True A Cosine Squared 47 Degrees Equals Start Fraction 1 Plus Cosine 94 Degrees Over 2 End Fraction B Cosine Left Parenthesis Start Fraction class=