Use the Substitution Formula to Evaluate the Integral $$\int _ { \pi / 3 } ^ { 2 \pi } 3 \cos ^ { 2 } x \sin x d x$$

question 88

Multiple Choice

Use the substitution formula to evaluate the integral.
- $$\int _ { \pi / 3 } ^ { 2 \pi } 3 \cos ^ { 2 } x \sin x d x$$

• A) \(- \frac { 21 } { 8 }\)
• B) \(- \frac { 129 } { 1024 }\)
• C) \(- \frac { 7 } { 8 }\)
• D) \(\frac { 7 } { 8 }\)

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