1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

The smallest positive integral value of n such that $${\left[ {{{1 + \sin {\pi \over 8} + i\cos {\pi \over 8}} \over {1 + \sin {\pi \over 8} - i\cos {\pi \over 8}}}} \right]^n}$$ is purely imaginary, is equal to

A
4
B
3
C
2
D
8
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

If Re(z + 2) = | z $$-$$ 2 |, then the locus of z is

A
parabola
B
circle
C
ellipse
D
hyperbola
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