a, b, c are the lengths of three sides of a triangle ABC. If a, b, c a – McqOptions

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1.	a, b, c are the lengths of three sides of a triangle ABC. If a, b, c are related by the relation a2 + b2 + c2 = ab + bc + ca, then the value of (sin2A + sin2B + sin2C) is?
A.	$\frac{3}{4}$$
B.	$\frac{3}{2}$$
C.	$\frac{{3\sqrt 3 }}{2}$$
D.	$\frac{9}{4}$$
Answer» E.

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