Question
In the following, determine whether the given values are solution of the given equation or not:
$x^2+x+1=0, x=0, x=1$
$x^2+x+1=0, x=0, x=1$
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Prove the following:
$\frac{\cos(90^\circ-\text{A})\sin(90^\circ-\text{A})}{\tan(90^\circ-\text{A})}-\sin^2\text{A}=0$
