Question 329702
{{{(1-Cos^2theta)/(Cos^2theta)}}}
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There is an identity that goes {{{Sin^2theta+Cos^2theta=1}}} which can
be written as {{{Sin^2theta=1-Cos^2theta}}}

So replace the numerator by {{{Sin^2theta}}}

{{{(Sin^2theta)/(Cos^2theta)}}}

which can be written

{{{(Sin(theta)/Cos(theta))^2}}}

There is an identity that goes {{{(Sin(theta))/(Cos(theta))=Tan(theta)}}}

So the final answer is

{{{(Tan(theta))^2}}}

or

{{{Tan^2theta}}}, choice c)

Edwin</pre>