<prompt> Ikiwa ei theta frac2 i sqrt53, basi tafuta sin 4 theta.  <response>: Kuweka usawa uliopewa, tunapatae2 i theta kushoto frac2 i sqrt53 kulia2 frac-1 4i sqrt59 .Kurudia tena, tunapatae4 i theta kushoto frac-1 4i sqrt59 kulia2 frac-79 - 8i sqrt5 81.Kwa hiyo, sin 4 theta -frac8 sqrt581. 