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I am doing Weather Data Project. I have to polt data and then make a sinusoid for it. I got two eqs:
f(h)= -20.8cos((π/6)*(x-1))+55.82
f(l) = -14.36cos(π/6)*(x-1))+44.28
I have to make sine function instead of cosine, i forgot it doing work. Can some body please convert them to sine function.
for first fucntion i tried f(h)= 20.8sin((π/6)(x-(1+π)))+55.82 its colse but its not identical to original. Please help. Thanks

2007-03-03 17:32:11 · 4 answers · asked by isska123 2 in Science & Mathematics Mathematics

please give answers in asin(b(x-h))+k form
a=amp, b=period

2007-03-03 17:48:22 · update #1

4 answers

f(h)=-20.8sin((pi/6)*(x-1)-pi/2)+55.82
f(I)=-14.36sin((pi/6)(x-1)-pi/2)+44.28

2007-03-03 17:39:02 · answer #1 · answered by bruinfan 7 · 0 0

Note cos(x) = sin(Pi/2 - x)

So f(x) = -20.8 sin(Pi/2 - Pi/6(x-1)) + 55.82

Similarly for the other function

2007-03-03 17:38:28 · answer #2 · answered by Anonymous · 0 0

In each of your equations make the substitution

cosπ/6 = sinπ/3 and you have your answers.

2007-03-03 19:09:23 · answer #3 · answered by Como 7 · 0 0

That is a yipe cos(x)=sin(pi/2-x)

2007-03-03 17:40:07 · answer #4 · answered by Ahmad k 2 · 0 0

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