SOLUTION: Evaluate the integral of (cos^3 x)^7 dx from x=0 to x=pi/6

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Question 937195: Evaluate the integral of (cos^3 x)^7 dx from x=0 to x=pi/6
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean %28cos%283x%29%29%5E7 or %28cos%28x%29%29%5E21?
Either way, you'll have to use integration by parts multiple times to get the final answer and you'll have a lot of terms.
Please repost.