If A , B ,C are angles of a triangles, t...

If `A , B ,C` are angles of a triangles, then the value of `|{:(e^(2i A),e^(-i C),e^(-i B)),(e^(-i C),e^(2i B),e^(-i A)),(e^(-i B),e^(-i A),e^(2i C)):}|` is

A

1

B

-1

C

-2

D

-4

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The correct Answer is:

D

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