Find real `theta` such that `(3+2isintheta)/(1-2isintheta)` is purely real.

Find real theta such that (3+2i\ sintheta)/(1-2i\ sintheta) is purely real.

Find real q such that (3+2isintheta)/(1-2isintheta) is purely real.

Find the theta such that (3+2i sin theta)/(1-2 isin theta) is (a) real

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

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

A value of for which (2+3isintheta)/(1-2isintheta) purely imaginary, is : (1) pi/3 (2) pi/6 (3) sin^(-1)((sqrt(3))/4) (4) sin^(-1)(1/(sqrt(3)))

The real value of alpha for which the expression (1- isin alpha)/(1+2i sinalpha) is purely real is

The real value of alpha for which the expression (1-isinalpha)/(1+2isinalpha) is purely real is

Which of the following is true for z=(3+2isintheta)(1-2sintheta)w h e r ei=sqrt(-1) ? z is purely real for theta=npi+-pi/3,n in Z z is purely imaginary for theta=npi+-pi/2,n in Z z is purely real for theta=npi,n in Z none of these

The real vaule of theta for which the expression (1+icostheta)/(1-2icos theta) is a purely imaginary number is