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Q24. i) Express 2 cos e = tan Bas a quadratic equation in cos 6. ii) Solve the equation 2 cos2 = tan29 for [21 [S -13/13/Q31 giving solutions in terms of Q25. i) Sketch on the same diagram , the curves: y = cosx—l for O' x' 2n, Y = sin2x and ii) Hence , state the number of solutions in the interval a) 2sin 1 b) sin 2 x— cos x +1 ................
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