<p>All right this is a fairly easy problem, but I am feeling like I am doing something wrong, PLEASE tell me Im right ahhhh!</p>
<p>Solve for all real values: 1/(cos(x)-sin(x)) = cos(x)+sin(x)?</p>
<p>so, my answer was 0+kpi (with k being all real numbers)</p>
<p>Some people were saying its ALL real values, but when you and plug it in your calculator that does not seem to be true. I hope im right...can anyone confirm please?!?!!</p>
<p>nevermind…i got it, im right. yay 
there’s one question I got right on my precalc final…i HATE that class. with a passion.</p>
<p>1=cos(x)^2-sin(x)^2
1=cos(2x)
x=0</p>
<p>You’re correct don’t worry </p>
<p>whoever said all real numbers probably thought it was:1=cos(x)^2+sin(x)^2</p>
<p>yeahh i think that’s what they were thinking somehow when they multiplied it out …phew. i cant afford to miss any more questions on that exam.</p>