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moutamadris.ma...9 A=cosa sinŒ+cosa l+sina I —sinc cos a D=cos 9 F=4îsin2 Œ+2sin45 cos a 9 E=sinax I—cosax sin I — cos a I—sinŒx 1+sinŒ = cosa 9 Sina 1 + COS (x —sinc

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