SOLUTION: cos2x+ tan2x=-5 then x=?

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Question 998333: cos2x+ tan2x=-5 then x=?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
From what I can tell, there is no closed form solution; it needs to be solved numerically...I get x = 50.9 degrees or so...