SOLUTION: Find All solutions in [0,2pi) correct to 3 decimal places: 4sec(x)+sec^2(x)=0

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Question 609489: Find All solutions in [0,2pi) correct to 3 decimal places:

4sec(x)+sec^2(x)=0
Answer by Alan3354(69443) About Me  (Show Source):
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Find All solutions in [0,2pi) correct to 3 decimal places:

4sec(x)+sec^2(x)=0
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sec*(4 + sec) = 0
sec = 0 reject
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sec = -4
x = 1.823
x = 4.460