Definition
Pi divided by two (π/2) is an angle measurement equal to 90 degrees or one-fourth of a complete revolution in a unit circle.
This definition is part of Fiveable's AP Calculus AB/BC review, which also has guided practice questions.
Keep studying AP Calculus AB/BC
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
AP Calculus AB/BC hub
Review units, study guides, and course resources.
AP-style practice
Check this vocabulary in multiple-choice context.
FRQ practice
Apply key concepts in written AP responses.
Score calculator
Estimate the exam score you are working toward.
Cheatsheets
Review the highest-yield facts before practice.