Help with trigonometric integration problem

  • #1
107
0
The problem is to find [itex]\int[/itex](cos5x)/([itex]\sqrt{sinx}[/itex])

I rewrote cos5x as cosx(1-sin2x)2, finally getting:

(cosx-2cosxsin2x+cosxsin4x)/[itex]\sqrt{sinx}[/itex]

and I don't even know if this is the correct path, so, any advice would be appreciated.
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,223
31
Re-write your integral replacing cos5x with what you have in your second line.

Now if you put t=sinx, what is dt?
 
  • #3
107
0
Re-write your integral replacing cos5x with what you have in your second line.

Now if you put t=sinx, what is dt?

Thanks! I have the answer!
 

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