hello.. i've been having some trouble with expanding this:(adsbygoogle = window.adsbygoogle || []).push({});

(B^2+C^2)^(1/2) X sin (omega*t +(taninverse B/C)

(read as: square root of (b squared plus c squared) times sin times the quantity omega times t plus taninverse of B divided by C)

apparently, the answer is supposed to be B cos omega*t + C sin omega*t .. but i've gotten like B arctan omega^2(t) + C cos omega*t... i just wanted to know like the way to get the answer.. i think i'm using trig identities incorrectly..

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# Homework Help: Help on expanding this equation

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