а) tg 139 = tg(360 + 139) = tg 139 = tg 139 radians ≈ tg 1.77 ≈ −5.68
б) cos 2743 = cos(360*7 + 143) = cos 143 radians ≈ cos 2.49 ≈ −0.69
в) sin 49π/5 = sin(5π*9 + π/5) = sin π/5 ≈ sin 3.14/5 ≈ 0.59
а) tg 139 = tg(360 + 139) = tg 139 = tg 139 radians ≈ tg 1.77 ≈ −5.68
б) cos 2743 = cos(360*7 + 143) = cos 143 radians ≈ cos 2.49 ≈ −0.69
в) sin 49π/5 = sin(5π*9 + π/5) = sin π/5 ≈ sin 3.14/5 ≈ 0.59