Stuck on this one question. 3cosx + 4sinx, write in terms of t=tan x/2 The answer is 3 - 3t^2 +8t / 1+t^2 Sorry I just wrote it in normal text, in a hurry lol. Thanks
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Hello icesta1 Originally Posted by icesta1 Stuck on this one question. 3cosx + 4sinx, write in terms of t=tan x/2 The answer is 3 - 3t^2 +8t / 1+t^2 Sorry I just wrote it in normal text, in a hurry lol. Thanks Provided you know the formulae: and I don't see what the problem is. Just substitute these into the expression, and the answer follows immediately: Have you seen these formulae before? Grandad
Hm... its funny cause I actually have that written in my book lol. I think i might have been looking at the wrong answer while doing it >_< lol. Thanks anyways EDIT: Nvm i got it
Last edited by icesta1; March 3rd 2010 at 11:43 PM.
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