Evaluate the Integral $$\int 7 \cos ^ { 3 } 5 x d x$$

question 120

Multiple Choice

Evaluate the integral.
- $$\int 7 \cos ^ { 3 } 5 x d x$$

• A) \(\frac { 7 } { 5 } \sin 5 x - \frac { 7 } { 15 } \cos ^ { 3 } 5 x + C\)
• B) \(\frac { 7 } { 5 } \sin 5 x + \frac { 7 } { 15 } \sin ^ { 3 } 5 x + C\)
• C) \(7 \sin 5 x - \frac { 7 } { 3 } \sin ^ { 3 } 5 x + C\)
• D) \(\frac { 7 } { 5 } \sin 5 x - \frac { 7 } { 15 } \sin ^ { 3 } 5 x + C\)

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