Sin2a=2sinacosa=-2*8/17*15/17=-240/289
sina<0
sina=-8/17
cos2a=2cos^2a-1=2*225/289-1=161/289
tg2a=-240/161
2045639 / (6700 – 6279) + 783 × (66161 – 65752) = 325106
4,7:10=0,47
4,7:100=0,047
4,6:1000=0,0046
0,47+0,047=0,517
0,517+0,0046=0,5216
АМ+МД=АД
АД=|10-2|=8
4*МД+МД=8
МД=8/5
АМ=32/5
М(х)=?
1)|10-х|=8/5
10-х=8/5
х=10-8/5=(50-8)/5=42/5
2)х-2=32/5
х=2+32/5=42/5