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65.Which one of the following statement ...

65.Which one of the following statement is incorrect.(1) sino+sin 30+ sin 50+....+ sin(2n - 1) = SIEsine(11) The minimum value of sin^x+cos^x is(11) In an acute-angle tringle ABC, tanA tans tancs 313.(IV) tan6^@ tan42^@ tan 66^@ tan 78^@ =1(C) (111)(A) (1)(B) (11)(D) (M)

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