Find the Length of the Polar Curve $r = 3 \cos \theta , 0 \leq \theta \leq \frac { 3 \pi } { 4 }$

question 73

Multiple Choice

Find the length of the polar curve. $r = 3 \cos \theta , 0 \leq \theta \leq \frac { 3 \pi } { 4 }$

• A) \(\frac { 9 \pi } { 11 }\)
• B) \(\frac { \pi } { 3 }\)
• C) \(\frac { 9 } { 4 }\)
• D) \(\frac { 9 \pi } { 4 }\)
• E) None of these

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