Asked by Mary

Solve for t if 0<t<2pi
Note: both are less than or equal to .
Please help!!
I am not sure what I should do.
Answered by Damon
Is it something like sin t = .5 or something?
Answered by Mary
e^-1 cost +sint(-e^-t)=0
Answered by Steve
Do you mean

e^-t cost + e^-t sint = 0?
If so, factor out the e^-t and you have

e^-t (cost - sint) = 0

e^-t is never 0, so that leaves

sint = cost
or
tant = 1

I think you can work with that, eh? Remember all four quadrants.
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