Establish this Identity:
(Cos(x)-Sin(x))^2+2Sin(x)Cos(x)=1
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Establish this Identity:
(Cos(x)-Sin(x))^2+2Sin(x)Cos(x)=1
First, expand the brackets.
Then, cross out some things.
Then, use:
And you'll be done! :)
Is that okay?
LOL! That was so easy... Thank you!
You're welcome :)
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