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№763. В треугольнике АВС АВ=6, ВС=8, B=90. Наидите а) ВА-ВС и ВА- ВС

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763 В треугольнике АВС АВ=6, ВС=8, ∠B=90°. Найдите: а) |ВА|-|ВС| и |ВА- ВС|; б)|АВ| |ВС| и |AB ВС|; в)|ВА| |ВС| и |ВА ВС|; г) |АВ|-|ВС| и |АВ-ВС|.

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