Prove the following- cos- -xcos-x-sin -x cos-2-x-cot2x

LHS= cos(π +x)cos( x) / sin(π x)cos( π #160; 2 +x ) #160; =( cos x #160;) ( cos x #160;) #160;/( sin x #160;) ( sin x #160;) #16 ...

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L'Hospital Rule to Remove Indeterminate Form

Prove the fol...

Question

Prove the following:
$\frac{c o s (π + x) c o s (- x)}{s i n (π - x) c o s (\frac{π}{2} + x)} = c o t^{2} x$

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\frac{cos (π + x) cos (- x)}{sin (π - x) cos (\frac{π}{2} + x)} = {cot}^{2} x

Prove the following:

= $\frac{cos (π + x) cos (- x)}{sin (π - x) c o s (\frac{π}{2} + 2)} = c o t^{2} x$

\frac{cos (π + x) cos (- x)}{sin (π - x) cos (\frac{π}{2} + x)} = {cot}^{2} x

\frac{cos (π + x) cos (- x)}{sin (π - x) cos (\frac{π}{2} + x)} = {cot}^{2} x

\frac{cos (π + x) cos (- x)}{sin (π - x) cos (\frac{π}{2} + x)} = {cot}^{2} x

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