cos(p/65).cos(2p/65).cos(4p/65).cos(8p/65).cos(16p/65).cos(32p/65) =x
sen(pi/65)cos(p/65).cos(2p/65).cos(4p/65).cos(8p/65).cos(16p/65).cos(32p/65) =xsen(pi/65)
(1/2)sen(2pi/65)cos(2p/65).cos(4p/65).cos(8p/65).cos(16p/65).cos(32p/65)=xsen(pi/65)
(1/4)sen(4pi/65)cos(4p/65).cos(8p/65).cos(16p/65).cos(32p/65) =xsen(pi/65)
(1/8)sen(8pi/65)cos(8p/65).cos(16p/65).cos(32p/65) =xsen(pi/65)
(1/16)sen(16pi/65).cos(16p/65).cos(32p/65) =xsen(pi/65)
(1/32)sen(32pi/65)cos(32p/65)=xsen(pi/65)
(1/64)sen(64pi/65)=xsen(pi/65)
Note agora que 64pi/65 e pi/65 são suplementares,ou
seja,sen(64pi/65)=sen(pi/65).Daí:
x=1/64
Se eu não tiver me atrapalhado em alguma etapa,é isso aí.
Eder
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