AnswersPrecalculusSolving Trigonometric Equations — Cumulative examQuestion 36
36
QuizMultiple Choice

Solving Trigonometric Equations — Cumulative exam

Question 36 • Precalculus

Which expression is equivalent to cos(4x)?

Answer
A
2(2cos2(x) – 1)2 – 1
B
2cos2(x) – 1
C
2cos2(x) – 4
D
4cos2(x)
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