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OpenStudy (anonymous):
cosx+2secx=-3 solve each equation for all real values of x
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OpenStudy (mertsj):
change secx to 1/cosx
OpenStudy (mertsj):
\[\cos x+\frac{2}{\cos x}+3=0\]
OpenStudy (mertsj):
\[\cos ^2x+3\cos x+2=0\]
OpenStudy (mertsj):
Factor and solve.
OpenStudy (anonymous):
could you elaborate a little on how you got from the 2/cosx to the next step?
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OpenStudy (anonymous):
nevermind! thanks
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