SOLUTION: solve the equation for the solution over the interval [0,360) tan^2theta+ 4sec theta=-5 finals tomorrow and have no idea thanks so much and god bless

SOLUTION: solve the equation for the solution over the interval [0,360) tan^2theta+ 4sec theta=-5 finals tomorrow and have no idea thanks so much and god bless

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Question 743902: solve the equation for the solution over the interval [0,360)
tan^2theta+ 4sec theta=-5
finals tomorrow and have no idea thanks so much and god bless
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
tan^2theta+ 4sec theta=-5

LCD:cos^2(x)

solve for cos(x) by quadratic formula

a=4, b=4, c=1

x=120�, 240� ( in Q2 and Q3 where cos<0)
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