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1、sin 0° =0cos 0° =1tan 0° =0cot 0°不存在sin 30° =1/2cos 30° =√3/2tan 30° =√3/3cot 30° =√3sin 45° =√2/2cos 45° =√2/2tan 45° =1cot 45° =1sin 60° =√3/2cos 60° =1/2tan 60° =√3cot 60° =√3/3sin 90° =1cos 90° =0tan 90° =不存在cot 90° =0sin 180° =0cos 180° =-1tan 180° =0cot 180°不存在sin 150° =1/2cos 150° =-√3/2tan 150° =-√3/3cot 150° =-√3sin 135° =√2/2cos 135° =-√2/2tan 135° =-1cot 135° =-1sin 120° =√3/2cos 120° =-1/2tan 120° =-√3cot 120° =-√3/3sin 270° =-1cos 270° =0tan 270° =不存在cot 270° =0sin360° =0cos 360° =1tan 360° =0cot 360°不存在sin 210° =-1/2cos 210° =-√3/2tan 210° =√3/3cot 210° =√3sin 225° =-√2/2cos225° =-√2/2tan 225° =1cot 225° =1sin 240° =-√3/2cos 240° =-1/2tan 240° =√3cot 240° =√3/3sin 330° =-1/2cos 330° =√3/2tan 330° =-√3/3cot 330° =-√3sin315° =-√2/2cos 315° =√2/2tan 315° =-1cot 315° =-1sin 300° =-√3/2cos 300° =1/2tan 300° =-√3cot300° =-√3/3。
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