it says to prove

1+sin2x=(sinx+cosx)^2

so I'm stuck

i have tried

1+2sinxcosx=1-2sin^2x

and

1+2sinxcosx=cos2x

...

I need help. Thanks.

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- May 7th 2009, 03:43 PMbrentwoodbc[SOLVED] Double angle problem
it says to prove

1+sin2x=(sinx+cosx)^2

so I'm stuck

i have tried

1+2sinxcosx=1-2sin^2x

and

1+2sinxcosx=cos2x

...

I need help. Thanks. - May 7th 2009, 03:49 PMProve It
- May 7th 2009, 03:54 PMbrentwoodbc
Awesome thank you.