Răspuns :
sin 135°=sin (180°-45°)=sin45°=1/√2
atunci relatia devine
(1/√2)²+(1/√2)²=1/2+1/2=1
as simple as that!
atunci relatia devine
(1/√2)²+(1/√2)²=1/2+1/2=1
as simple as that!