Acute angle between two curves \( x^{2}+y^{2}=a^{2} \sqrt{2} \) and \( x^{2}-y^{2}=a^{2} \) is (...
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0Acute angle between two curves \( x^{2}+y^{2}=a^{2} \sqrt{2} \) and \( x^{2}-y^{2}=a^{2} \) is
(A) \( \frac{\pi}{6} \)
(B) \( \frac{\pi}{3} \)
(C) \( \frac{\pi}{4} \)
(D) none of these
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