Question

tg^2(-п/3)*ctg ^2 п/3 * сos ^2 (-п/4)

Answer 1

$=0.5$$tg^2(- frac{ pi }{3} )*ctg^2( frac{ pi }{3} )*cos^2(- frac{ pi }{4} )=(- sqrt{3} )^{2} *( frac{1}{ sqrt{3} } )^{2} * (frac{ sqrt{2} }{2} )^2=3* frac{1}{3} * frac{1}{2}$$=0.5$