theta" for which "((1+i cos theta)/(1-2i cos theta))" is purely real "

Find real value of theta for which (3+2i sin theta)/(1-2i sin theta) is purely real.

Find real value of theta for which (3+2i sin theta)/(1-2i sin theta) is purely real.

Find real values of theta for which (4 + 3i sin theta) / (1 - 2i sin theta) is purely real.

Find the real values of theta for which the complex number (1+i cos theta)/(1-2i cos theta) is purely real.

The real value of theta for which the expression (1+i cos theta)/(1-2i cos theta) is real number is

If (1+i cos theta)/(1-2i cos theta) is purely imaginary then theta =

Find the real values of theta for which the complex number (1+i costheta)/(1-2i costheta) is purely real.

The real value of theta for which the expression (1+I cos theta)/(1-2i cos theta) is a real number is