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Angle subtended by chord of a circle at ...

Angle subtended by chord of a circle at the centre is twice the angle subtended at the circumference . If OP is rotated through an angle `phi` in anti - clockwise direction to become OQ then ` OQ = OP e^(iphi)`
If `omega` is a complex number such that `| omega| = r ne 1 ` then ` z = omega + (1)/( omega)` describes a conic. The distance between the foci is

A

2

B

`2 (sqrt(2) - 1)`

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
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