The angle of intersection of the circles \( x^{2}+y^{2}=4 \) and \( x^{2}+y^{2}=2 x+2 y \), is (...
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0The angle of intersection of the circles \( x^{2}+y^{2}=4 \) and \( x^{2}+y^{2}=2 x+2 y \), is
(A) \( \pi / 2 \)
(B) \( \pi / 3 \)
(C) \( \pi / 6 \)
(D) \( \pi / 4 \)
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