WB JEE 2019 | Complex Numbers Question 33 | Mathematics

WB JEE 2019

MCQ (More than One Correct Answer)

-0

If $$\theta \in R$$ and $${{1 - i\cos \theta } \over {1 + 2i\cos \theta }}$$ is real number, then $$\theta $$ will be (when I : Set of integers)

$$(2n + 1){\pi \over 2},n \in I$$

$${{3n\pi } \over 2},n \in I$$

$$n\pi ,n \in I$$

$$2n\pi ,n \in I$$

WB JEE 2017

MCQ (More than One Correct Answer)

-0

The complex number z satisfying the equation | z $$-$$ 1 | = | z + 1 | = 1 is

1 + i

$$-$$ 1 + i

1 $$-$$ i

WB JEE Subjects