# Amount of 2 amperage [closed]

I have 2 equation describing the alternating amperage $I_1$ and $I_2$. I need to get amount of these amperages.

My equations: $$I_1=10\sin(\omega t+30)$$ $$I_2=20\sin(\omega t-50)$$

How can i make it? I forgot.

Thank you.

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## closed as too localized by Qmechanic♦Feb 15 '13 at 15:29

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Please don't post your homework, if that's what this is. Otherwise, it's unclear to me what you're asking. – Mark Eichenlaub Nov 14 '10 at 6:28
@shk: do you need to add i1 and i2 and reduce to the shortest form? – Peter Mortensen Nov 14 '10 at 10:13
Better always use "current" instead of "amperage", especially on a physics site. – Peter Mortensen Nov 14 '10 at 10:19
I am not sure what you are really asking here. Do you just want the R.M.S. current? – Noldorin Nov 14 '10 at 16:06
What's wrong with "amperage"? dictionary.reference.com/browse/amperage – endolith Nov 15 '10 at 17:01

$\sqrt{\frac{1}{T} \int_0^T i(t) dt }$