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# If A,B, and C are angles of a triangle , then $e^{iA}.e^{iB}.e^{iC}=$

$\begin{array}{1 1}(A)\;i \\(B)\;1 \\(C)\;-i \\ (D)\;-1 \end{array}$

If A,B, and C are angles of a triangle , then $e^{iA}.e^{iB}.e^{iC}=-i$
Hence C is the correct answer.
answered Apr 11, 2014 by