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Last edited by wiseguy; Aug 6th 2010 at 10:29 AM.
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In the "little prince" there is a line: "Draw me a sheep!" Now, instead of using composite argument property for cosine and instead drawing me something.... draw to yourself a unit circle.
I understand that cos(90-x)=sin, I just have no idea how to interwind it with the composite argument property
Well, let's try it. But cos(90) = 0 and sin(90) = 1. So?
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Last edited by Unknown008; Jul 26th 2010 at 09:50 AM. Reason: dup =(
Originally Posted by wiseguy "Use the composite argument property for cosine to prove that " I'm aware the composite argument property of cosine is - how would you use that to show ? You do realise that your formatting is messed up, right? From context, you mean Given that prove that . So let and and write it out..