1.

If A,B,C are angles of a triangle, then the value of ∣∣∣∣∣e−2iAeiCeiBeiCe−2iBeiAeiBeiAe−2iC∣∣∣∣∣ is

Answer»

If A,B,C are angles of a triangle, then the value of ∣∣
∣
∣
∣
e−2iAeiCeiBeiCe−2iBeiAeiBeiAe−2iC∣∣
∣
∣
∣
is





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