1) sin 43 градусов - sin 13 градус = sin(43) - sin(13) = 0.6816 - 0.2249 = 0.45672) cos 5 градусов - cos 15 градус = cos(5) - cos(15) = 0.9962 - 0.9659 = 0.03033) cos 27 α + cos 17 α = cos(27) + cos(17) = 0.8910 + 0.9511 = 1.8421.
1) sin 43 градусов - sin 13 градус = sin(43) - sin(13) = 0.6816 - 0.2249 = 0.4567
2) cos 5 градусов - cos 15 градус = cos(5) - cos(15) = 0.9962 - 0.9659 = 0.0303
3) cos 27 α + cos 17 α = cos(27) + cos(17) = 0.8910 + 0.9511 = 1.8421.