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[" 2) Let "theta={1,2,3,-1,0},A={2,3}" a...

[" 2) Let "theta={1,2,3,-1,0},A={2,3}" and "b=13,4,3" plan that "A(b)" - A "A" is "],[" 3) Let "A={1,2,3}B={3,4}" and "C={4,5,6}" Find "(A times B)nn(A times C)" ."],[" 4) If in two circles,arcs of the same length subtend angles "60" and "75" at the centre.Find the ratio of their radii."],[" 5) Prove that "2sin^(2)(3 pi)/(4)+2cos^(2)(pi)/(4)+2sec^(2)(pi)/(2)=10]

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