Please help me prove this identity:

2Sin^2(x+pi/4) = 1 + Sin2x

I was thinking that I have to include cofunctions somehow, but have no idea how! This has been bugging me for too long! (Headbang)

Thanks!

Andrew

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- Oct 30th 2009, 08:02 AMAndroidAdvanced problem!!
Please help me prove this identity:

2Sin^2(x+pi/4) = 1 + Sin2x

I was thinking that I have to include cofunctions somehow, but have no idea how! This has been bugging me for too long! (Headbang)

Thanks!

Andrew - Oct 30th 2009, 08:21 AMramiee2010
- Oct 30th 2009, 08:39 AMAndroid
That all makes perfect sense! Thank you SO much!