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

If (2 + 3 isin theta)/(1- 2isin theta) is purely imaginary , then cos^(2) theta =

If the complex number (1-i sin theta)/(1+2 i sin theta) is purely imaginary, then the principal value of theta is

If theta in RR and (1 +i cos theta)/(1-2 i cos theta) is real number, then theta will be (when I : Set of integers)

(3+2i sin theta)/(1-2i sin theta) will be purely imaginary,then find theta

(3+2i sin theta)/(1-2i sin theta) will be purely imaginary,then find theta?

Let A={theta in (-pi /2,pi):(3+2i sin theta )/(1-2 i sin theta ) is purely imaginary } Then the sum of the elements in A is

Let A={theta in (-pi /2,pi):(3+2i sin theta )/(1-2 i sin theta ) is purely imaginary } Then the sum of the elements in A is

(3+2 i sin theta)/(1-2 i sin theta) will be purely imaginary, if theta is equal to

Let A={theta in (-pi /2,pi):(3+2i sin theta )/(1-2 isin theta ) is purely imaginary } Then the sum of the elements in A is

Let A={theta in (-pi /2,pi):(3+2i sin theta )/(1-2 sin theta ) is purely imaginary } Then the sum of the elements in A is