Determine the Integral by Making an Appropriate Substitution $\int ( \cos x ) ^ { 8 } \sin x d x$

question 126

Multiple Choice

Determine the integral by making an appropriate substitution.
- $\int ( \cos x ) ^ { 8 } \sin x d x$

• A) -9 \(( \cos x ) ^ { 9 }\) + C
• B) \(\frac { 1 } { 9 }\) \(( \cos x ) ^ { 9 }\) + C
• C) 9 \(( \cos x ) ^ { 9 }\) + C
• D) - \(\frac { 1 } { 9 }\) \(( \cos x ) ^ { 9 }\) + C

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