wtf

wtf?

(sqrt(2)-2)*cos(x)=0.5

Hallo Gast!

$(\sqrt 2-2)*cos(x)=0,5\\ cos (x)=0,5/(\sqrt 2-2)=-0,853553390589\\ x=arc\ cos(-0,853553390589)$

$x_1=148°36'\\ x_2=211°24'$

HTH

  !