(4.8*10^(-2))(8*10^(-2))=4.8*8*10^(-4)=38.4:10000=0,00384
Sin(45-b)+sin(45+b)=sin45cosb-sinbcos45+<span>sin45cosb+sinbcos45=2sin45cosb=2cosb</span>
-10а<u />+15b-20b+4a
-10×(-0,4)+15×0,1-20×0,1+4(-0,4)=-0,876
= 2a(2p + 1) - p(2p + 1) = (2p + 1)(2a - p).