Question

simplifique sen(4π)+cos(8 π-x)-sen(720°-x)

Answer 1

720° = 2π lembrando

sen(4π)+cos(8 π-x)-sen(720°-x)

sen(4π)+cos(8 π-x)-sen(2π-x) aplicando a soma de arcos

sen(4π)+[(cos8πcosx+sen8πsenx)-(sen2πcosx-senxcos2π)]

0+[ (1.cosx+0.senx) - (0.cosx-senx.1)]

[cosx-(-senx]

cosx+senx