The angle of intersection of the circles \[{{x}^{2}}+{{y}^{2}}=4\] and \[{{x}^{2}}+{{y}^{2}}=2x+2y\] is

The angle of intersection of the circles \[{{x}^{2}}+{{y}^{2}}=4\] and

1.	The angle of intersection of the circles \[{{x}^{2}}+{{y}^{2}}=4\] and \[{{x}^{2}}+{{y}^{2}}=2x+2y\] is
A.	\[\frac{\pi }{2}\]
B.	\[\frac{\pi }{3}\]
C.	\[\frac{\pi }{6}\]
D.	\[\frac{\pi }{4}\]
Answer» E.

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The angle of intersection of the circles \[{{x}^{2}}+{{y}^{2}}=4\] and \[{{x}^{2}}+{{y}^{2}}=2x+2y\] is

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