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A value of 0 € (0, Tc/3), for which 1+ c...

A value of 0 € (0, Tc/3), for which 1+ cos? o sin? 0 4cos 68 cos 1+ sin? 0 4 cos 60 cos? A sin? 0 i +4 cos 60 = 0, is (1) 3 (2) 3 24

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