Réponses

  • Utilisateur Brainly
2013-04-17T20:31:56+02:00

1)

 

[(sin(п/4)+cos(3п/2))*tg(п/3)] / [ctg(п/6)-ctg(п/2)]

=[(√2/2+0)*√3] / [√3-0]

=√2/2

 

2)

[cos100° tg 250°] / [sin300°- ctg 100°]

=0,691