Express sin (5x) in terms of sin x

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#sin #sin5x #trigonometry
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this would be so much easier using de moiré's theorem

Fouriersuir
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Can you plz explain why did we take 5x=2x+3x
We also could have taken 5x=4x+x?

omiyaothai
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Sine(×/3)=? Cosine(×/3)=? Sine(X/4)=? Cosine(×/4)=? Sine(×/5)=? Cosine(×/5)=? Sine(×/6)=? Cosine(×/6)=? Sine(×/7)=? Cosine(×/7)=? Sine(×/8)=? Cosine(×/8)=? Sine(×/9)=? Cosine(×/9)=? Sine(×/10)=? Cosine(×/10)=? Sine(×/11)=? Cosine(×/11)=? Sine(×/12)=? Cosine(×/12)=? Sine(×/13)=? Cosine(×/13)=? Sine(×/14)=? Cosine(×/14)=? Sine(×/15)=? Cosine(×/15)=? Sine(×/16)=? Cosine(×/16)=? Sine(×/17)=? Cosine(×/17)=? Sine(×/18)=? Cosine(×/18)=? Sine(×/19)=? Cosine(×/19)=? Sine(×/20)=? Cosine(×/20)=? Sine(×/21)=? Cosine(×/21)=? Sine(×/22)=? Cosine(×/22)=? Sine(×/23)=? Cosine(×/23)=? Sine(×/24)=? Cosine(×/24)=? Sine(×/25)=? Cosine(×/25)=? Sine(×/26)=? Cosine(×/26)=? Sine(×/27)=? Cosine(×/27)=? Sine(×/28)=? Cosine(×/28)=? Sine(×/29)=? Cosine(×/29)=? How to approximate with polynomials more precisely? How to approximate with Taylor polynomials? How to deduce these formulas? The opposite triple, quintuple, sextuple bow gives a lot of work and exhaustion!

MarcosSilva-tpus
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Bạn đã làm sai cos2x bằng 1 trừ 2 sinx bình chứ

nghiainh
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