Question 626681: if 0≤θ<360°, solve the equation: sec^2(2θ)+ 2sec(2θ)=0
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! if 0≤θ<360°, solve the equation: sec^2(2θ)+ 2sec(2θ)=0
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Factor:
sec(2theta)[sec(2theta+1] = 0
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sec(2theta) = 0 or sec(2theta) = -1
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There is no solution for sec(2theta) = 0
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If sec(2theta) = -1, 2theta = pi, and theta = pi/2
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Cheers,
Stan H.
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