а) sin26cos34+sin19cos11 = sin(26)cos(34) + sin(19)cos(11) ≈ 0.418
б) cos(pi/8)cos(pi/24)-sin(5pi/24)sin(pi/8) = cos(π/8)cos(π/24) - sin(5π/24)*sin(π/8) ≈ 0.239
а) sin26cos34+sin19cos11 = sin(26)cos(34) + sin(19)cos(11) ≈ 0.418
б) cos(pi/8)cos(pi/24)-sin(5pi/24)sin(pi/8) = cos(π/8)cos(π/24) - sin(5π/24)*sin(π/8) ≈ 0.239