Solve the Problem $r$ -Value for the Polar Equation $r = 5 \cos 2 \theta$

question 84

Multiple Choice

Solve the problem.
-What is the maximum $r$ -value for the polar equation $r = 5 \cos 2 \theta$ ? Note that a maximum $r$ -value is a maximum value of $| \mathrm { r } |$ , the maximum distance from the pole.

• A) 2
• B) \(5 , - 5\)
• C) 7
• D) 5

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