1
WB JEE 2019
MCQ (More than One Correct Answer)
+2
-0
Change Language
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)
A
$$(2n + 1){\pi \over 2},n \in I$$
B
$${{3n\pi } \over 2},n \in I$$
C
$$n\pi ,n \in I$$
D
$$2n\pi ,n \in I$$
2
WB JEE 2017
MCQ (More than One Correct Answer)
+2
-0
Change Language
The complex number z satisfying the equation | z $$-$$ 1 | = | z + 1 | = 1 is
A
0
B
1 + i
C
$$-$$ 1 + i
D
1 $$-$$ i
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