((6*10^24 кг)/(2*10^30 кг))*100%=(3/10^6)*100%=3/10000%
1) sin^2x+cos^2x+cos^2x-sin^2x = 2sinxcosx
cos^2x = sinxcosx
cosx(cosx-sinx) = 0
cosx = 0 => x = π/2 + <span>πn
</span>cosx = sinx => 1 = tgx => x = π/4+<span>πn
2)sin3xsinx+cos3xcosx=1
cos(3x-x) = 1
cos2x = 1
2x = 2</span><span>πn
x = </span><span>πn</span>