cos^{2}30° x sin^{2}30° - cos^{2}60° - sin^{2}60° + cos^{2}45° + sin^{2}45°
= (cos30° x sin30°)^2 - cos^2(60°) - sin^2(60°) + cos^2(45°) + sin^2(45°)
= (0.5)^2 - 0 - 1 + (0.7071)^2 + (0.7071)^2
= 0.25 - 1 + 0.5 + 0.5
= 0.25
sin30° + cos60°
= sin(30°) + cos(60°)
= 0.5 + 0.5√3
≈ 0.5 + 0.5 * 1.732
= 0.5 + 0.866
≈ 1.366
cos^{2}30° x sin^{2}30° - cos^{2}60° - sin^{2}60° + cos^{2}45° + sin^{2}45°
= (cos30° x sin30°)^2 - cos^2(60°) - sin^2(60°) + cos^2(45°) + sin^2(45°)
= (0.5)^2 - 0 - 1 + (0.7071)^2 + (0.7071)^2
= 0.25 - 1 + 0.5 + 0.5
= 0.25
sin30° + cos60°
= sin(30°) + cos(60°)
= 0.5 + 0.5√3
≈ 0.5 + 0.5 * 1.732
= 0.5 + 0.866
≈ 1.366