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[" If "x=2cos theta-cos2 theta" and "],[...

[" If "x=2cos theta-cos2 theta" and "],[y=2sin theta-sin2 theta," then "(dy)/(dx)=],[qquad [" (A) "-tan((3 theta)/(2))," [MH "CET],[" (C) "tan((3 theta)/(2))," (D) "cot((28)/(3))]]

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