Question

cos45 sin45 tang45 ctan45

Answer 1

$frac{ sqrt{2} }{2}* frac{ sqrt{2} }{2} *1*1= frac{ sqrt{2}* sqrt{2} }{4} *1 = frac{2}{4}*1= frac{2}{4}= frac{1}{2}=0,5$

Answer 2

$cos45^circ cdot sin45^circ cdot( tg45^circ cdot ctg45^circ)=frac{sqrt2}{2}cdot frac{sqrt2}{2}cdot 1=frac{1}{2}$