Confusing Math questions.

<p>1)(sin^2)x-2sinx-3=0</p>

<p>2)2(sin^2)x-5sinx+2=0</p>

<p>3)2(sin^2)x-3sinx-2=0</p>

<p>4)3(sin^2)x-4sinx+1=0</p>

<p>delete this thread</p>