Comments

• (1-sen2x)(2+sen²3x)=0 1 - sen 2x = 0 - sen 2x = -1 sen 2x = 1 2x = 90 --> x = 45 --> pi/4 sen²3x+2 = 0 sen²3x = -2 (não convém)

  in A solução da equação (1-sen2x)(2+sen²3x)=0 é? Comment by dylan-holmes_60c15a01ea9f6 June 2021