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1. The problem statement, all variables and given/known data

how do you integrate this one

[tex]\int sint cosnt dt[/tex]

i tried using this identity 1/2 [sin(t-nt) + sin (t-nt)]

then i got stuck so i used another identity again

sin (t[tex]^{+}_{-}nt [/tex])= sintcosnt[tex]^{+}_{-}[/tex]costsinnt

the result is the original equation..

to sum it all, im hopelessly stuck

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# Homework Help: Integration-im lost

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