amaths, ...can anyone help me? |
 Sep 9 2005, 09:53 AM
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#1
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 Senior Member  Group: Member Posts: 64 Joined: Feb 2005 Member No: 104,345  |
i'm calculation (actually proving) an amaths question.
when it nearly comes to the end, i dunno how to do, so i looked at the answer. and my question is, how can [sin2kθ (1-2sin^2(i mean square here)θ ) +sin2θcos2kθ ] / 2sinθ change into [sin(2k+2)θ ] / 2sinθ ? i would be grateful if someone can tell me how this can be converted. thanks edit// well...er....i'm in grade 11(form 5) now. yeah. jus to let u know... |
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Sep 9 2005, 10:09 PM
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#2
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 hi. call me linda. Group: Official Member Posts: 8,187 Joined: Feb 2004 Member No: 3,475 |
Ahhh trig and trig identities... I'm working on it now...
I'll edit this when I figure it out. |
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Posts in this topic
bonluvdan amaths Sep 9 2005, 09:53 AM
xcaitlinx woahh..that looks liek complete gibberish to me... Sep 9 2005, 02:12 PM bonluvdan urgh!!!!!!!!!... Sep 12 2005, 07:02 AM bonluvdan ok, i think i can finally know y now!!... Sep 22 2005, 06:38 AM
mzkandi Ok, this question was asked way back on Sept. 9, s... Sep 24 2005, 02:04 PM |
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