If \[A+B+C=\pi ,\] then\[\cos 2A+\cos 2B+\cos 2C+4\sin A\sin B\sin C\] is equal to:

If \[A+B+C=\pi ,\] then\[\cos 2A+\cos 2B+\cos 2C+4\sin A\sin B\sin C\]

1.	If \[A+B+C=\pi ,\] then\[\cos 2A+\cos 2B+\cos 2C+4\sin A\sin B\sin C\] is equal to:
A.	0
B.	1
C.	2
D.	3
Answer» C. 2

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If \[A+B+C=\pi ,\] then\[\cos 2A+\cos 2B+\cos 2C+4\sin A\sin B\sin C\] is equal to:

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