来自刘栋臣的问题
常用三角函数值有30456090180270360sincostan
常用三角函数值有30456090180270360sincostan
1回答
2020-01-29 17:59
常用三角函数值有30456090180270360sincostan
常用三角函数值有30456090180270360sincostan
360°|270°|0°|15°|30°|37°|45°
sin|0|-1|0|(√6-√2)/4|1/2|3/5|√2/2
cos|1|0|1|(√6+√2)/4|√3/2|4/5|√2/2
tan|0|无值|0|2-√3|√3/3|3/4|1
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|53°|60°|75°|90°|120°|135°
sin|4/5|√3/2||(√6+√2)/4|1|√3/2|√2/2
cos|3/5|1/2|(√6-√2)/4|0|-1/2|-√2/2
tan|4/3|√3|2+√3|无值|-√3|-1