C2 Trig Question

Try to move the -root3 cos 2t to the other side, and divide both sides by cost2t

So you have tan2t=root3

Divide everything by cos2t ... should sort you out!

By the time I go and grab a piece of paper and pen, someone will already have answered you

Haha almost

I agree with the 2 people who already commented above..you don't lose solutions.

Ohhhh of course my bad! Thanks everyone

Another way to do this problem would be to write it in the form $R\sin (2t-\alpha)$, but it seems like overkill for this question.



FWIW in case you want to know why you don't lose solutions: when you divide through by $\cos 2t$ you're not cancelling a common factor, so it doesn't "disappear" as such, since it gets "caught" by the $\sin 2t$.