📝 ACT Exam Prep

What is the period of y = cos(x)?

A π
B 2π
C π/2
D 4π

✓ Correct Answer: Option B

Both sin(x) and cos(x) have a period of 2π.

💡 Why is B) the correct answer?

The correct answer to the question "What is the period of y = cos(x)?" is Option B: 2π.

The other options — A) π, C) π/2, D) 4π — are incorrect for this ACT Exam Prep question. As explained above: Both sin(x) and cos(x) have a period of 2π.

📚 About This ACT Exam Prep Practice Question

This 2-level ACT Exam Prep question from the Mathematics topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free ACT Exam Prep practice test or use flashcards for spaced repetition review.

Related ACT Exam Prep Questions