The equation 8cosx cos2x cos4x = (sin6x)...

The equation `8cosx cos2x cos4x = (sin6x)/(sinx)` has a solution given by :

`x = npi + pi/4`

`x = (2n + 1)pi/14`

`x = (2n + 1)pi/7`

`x = npi.`

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