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1)5²+2² =CM²
CM²= 29
CM=√(29)≈5.4cm
2)tan(TCM)= 2/5
donc TCM=arctan(2/5)≈22°
3)Aire de TCM = (5x2)/2 = 5cm²
Aire de MEF =((6-2)x3)/2 =4x3/2 = 6cm²