Question 675025
Find all t in the interval [0, 2π] satisfying 2 cos 3t - cot 3t = 0. 
I honestly don't know where to even begin on this problem.
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2cos3t-cot3t=0
2cos3t=cot3t
2cos3t=cot3t/sin3t
2sin3tcos3t=cos3t
sin6t=cos3t
6t=π/3
t=π/18
note: at t=π/18, 6t and 3t become complementary angles