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$