[tex]0=\frac{cos^2x}{x}-\frac{1}{5}[/tex](adsbygoogle = window.adsbygoogle || []).push({});

[tex]\frac{1}{5}=\frac{\cos x \cos x}{x}[/tex]

[tex]5=\frac{x}{\cos x \cos x}[/tex]

[tex]0=x \sec ^2 x-5[/tex]

is this true? when I plot this, it doesnt give me the same function

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# Homework Help: Math plotting and simplifying

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