Question 1040636
.
Simplify:

( cosA - sinA)^2 / cosA
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<pre>
{{{(cos(A) - sin(A))^2/cos(A)}}} = {{{(cos^2(A) - 2*sin(A)*cos(A) + sin^2(A))/cos(A)}}} = {{{(1-2*sin(A)*cos(A))/cos(A)}}} = {{{1/cos(A) - 2sin(A)}}}.
</pre>