正弦余弦的25度 30度45度60度37.5度52.5度65度值分别是多少

sin25°=0.4226 cos25°=0.9063sin30°=0.5000 cos30°=0.8660sin45°=0.7071 cos45°=0.7071sin60°=0.8660 cos60°=0.5000sin37.5°=0.6088 cos37.5°=0.7934sin52.5°=0.7934 cos52.5°=0.6088sin65°=0.9063 cos...