Угол ∠А=180-30-105=45
Проведем высоту СН=AC*sinA=4sin45=4√2/2
АН=4cos45=4√2/2
BH=CH*ctg30=4√2/2 *√3/3=4√6/6
BC=CH/sin30=4√2/2*2=4√2
AB=BH+AH=4√6/6+4√2/2
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Угол ∠А=180-30-105=45
Проведем высоту СН=AC*sinA=4sin45=4√2/2
АН=4cos45=4√2/2
BH=CH*ctg30=4√2/2 *√3/3=4√6/6
BC=CH/sin30=4√2/2*2=4√2
AB=BH+AH=4√6/6+4√2/2