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Mathematics 14 Online
OpenStudy (anonymous):

What is the period of the function f(θ) = -2cos3θ? 1) π 2) 2π/3 3) 3π/2 4) 2π How did you get your answer?

jimthompson5910 (jim_thompson5910):

Hint: the period of y = A*cos(Bx) is T = 2pi/B

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