Integral of cos^6x dx

Ive tried breaking it apart different powers but I can't figure out the correct combination.

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- Oct 9th 2007, 05:11 PMff4930Trig Integration
Integral of cos^6x dx

Ive tried breaking it apart different powers but I can't figure out the correct combination. - Oct 9th 2007, 05:16 PMJhevon
- Oct 9th 2007, 05:18 PMff4930
This problem said to solve it using trig.

breaking it into

cos^4x and cos^2x dont seem to help

=(1-sin^2x)^2 cos^2x - Oct 9th 2007, 05:49 PMqbkr21Re:
Re:

- Oct 9th 2007, 05:55 PMff4930
Problem is cos^6x not sin^6x

- Oct 9th 2007, 06:16 PMKrizalid