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

e2iAeiCeiBeiCe2iBeiAeiBeiAe2iC

is





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