$A = \frac{\sin(-328).\sin958}{\cot572}-\frac{\cos(-508).\cos(-1022)}{\tan(-212)}$
$A = -\frac{\sin(328).\sin958}{\cot572}+\frac{\cos(508).\cos(1022)}{\tan(212)}$
$A = -\frac{\sin(-32+360).\sin(-122+3.160)}{\cot(32+3.180)}+\frac{\cos(148+360).\cos(58+360.3)}{\tan(32+180)}$
$A =- \frac{\sin(-32).\sin(-122)}{\cot(32)}+\frac{\cos(148).\cos(58)}{\tan(32)}$
$A =- \frac{\sin(32).\sin(122)}{\cot(32)}-\frac{\cos(32).\cos(58)}{\tan(32)}$
$A =- \frac{\sin(32).\sin(58)}{\cot(32)}-\frac{\sin(58).\sin(32)}{\tan(32)}$
$A =- \sin(32).\sin(58)\left ( \frac{1}{\cot(32)}+\frac{1}{\tan(32)} \right )$
$A =- \sin(32).\sin(58)\left ( \frac{ \sin(32)}{\cos(32)}+\frac{\cos (32)}{ \sin(32)} \right )$
$A =- \sin(32).\sin(58)\left ( \frac{ \sin^2(32)+\cos^2 (32)}{\sin(32)\cos(32)} \right )$
$A =- \sin(32).\sin(58)\left ( \frac{ 1}{\sin(32)\sin(58)} \right )$
$A=-1.$