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Mathematics 19 Online
OpenStudy (mathmath333):

Trigonometry question

OpenStudy (anonymous):

what is it

OpenStudy (mathmath333):

|dw:1453715817451:dw|

OpenStudy (anonymous):

is that a book

OpenStudy (mathmath333):

nyaoa

OpenStudy (mathmath333):

i also dont know what period means here

hartnn (hartnn):

period of \(y = A \sin (\omega t +\phi )\) is \(\Large T = \dfrac{1}{2\pi \omega }\) use this formula

OpenStudy (anonymous):

I was about to ask that

hartnn (hartnn):

period means the function repeats itself after that amount of time (time if x axis represents time, else whatever is represented by x axis)

OpenStudy (mathmath333):

t=1/2n

hartnn (hartnn):

sorry for the bad formula

hartnn (hartnn):

\(T = \dfrac{2\pi }{\omega }\)

OpenStudy (mathmath333):

i m confused does \(\phi\) ot \(t\) resembles \(\theta\) there

hartnn (hartnn):

\(\phi \) is the phase difference, \(\theta \) is the x-axis variable here \(\phi = 0 \)

hartnn (hartnn):

|dw:1453716261982:dw|

hartnn (hartnn):

|dw:1453716299889:dw|

OpenStudy (mathmath333):

is this correct ? \(A\sin(wt+\phi)=\sin (n\theta)\\ A=1 \\ wt=\theta \\ \phi =0\)

OpenStudy (mathmath333):

\(A\sin(wt+\phi)=\sin (n\theta)\\ A=1 \\ wt=n\theta \\ \phi =0\)

hartnn (hartnn):

yes

OpenStudy (mathmath333):

is w=1 ?

hartnn (hartnn):

we can use t or \(\theta \) \(\omega \theta = n \theta \\ \omega = n\)

OpenStudy (mathmath333):

\(\Huge \dfrac{2\pi}{n}\)

hartnn (hartnn):

\(\Huge \color{green} \checkmark \)

OpenStudy (mathmath333):

thnks

hartnn (hartnn):

wlcms ^_^

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