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anonymous
 one year ago
if 0 is less then theta less than 360 degrees solve sec^2+2sec(2theta)=0
anonymous
 one year ago
if 0 is less then theta less than 360 degrees solve sec^2+2sec(2theta)=0

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amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436553239686:dw

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{1+2\cos \theta}{\cos^2\theta}=0\\1+2\cos \theta=0\\cos \theta =\frac{1}{2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amoodarya can you explain where your getting the one? is that a formula?

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1\[\sec \theta =\frac{1}{\cos \theta}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amoodarya alright so how would you go about solving that then with everything applied?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amoodarya where would the 2sec(2theta) go in the formula? isn't it suppose to be at the bottom not top?

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1\[\sec^2\theta +2\sec \theta=0\\ \frac{ 1 }{ \cos^2\theta }+2\frac{ 1 }{ \cos \theta }=0\\\frac{ 1 }{ \cos^2\theta }+2\frac{ \cos \theta }{ \cos^2 \theta }=0\\\frac{1+2 \cos \theta }{ \cos^2 \theta }=0\\1+2 \cos \theta=0\\ \cos \theta=\frac{1}{2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amoodarya so the answer is 1/2 then? is there a way to check it?

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1\[\cos (\theta)=0.5\\ \theta =\pm(\frac{2\pi}{3})+2k \pi\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What does that mean exactly?

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1if you mean denominator goes to zero , you are in a right way but in your case , no problem \[denominator \neq 0\]

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436554471870:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ooohhhhh I see now haha thank you very much!!!
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