Would someone like to help a confused AB Calc Student?

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- March 9th 2010, 03:57 PMpenguinpwnOne more for tonight, then I'll leave you guys alone...

Would someone like to help a confused AB Calc Student? - March 9th 2010, 04:01 PMDrexel28
- March 9th 2010, 04:14 PMpenguinpwn
Could you please explain where the third step you have shown came from?

- March 9th 2010, 04:16 PMDrexel28
- March 9th 2010, 04:19 PMpenguinpwn
Ok, i get it now the double angle formula. Thanks for clarifying for me =)

- March 9th 2010, 04:22 PMDrexel28