①sin(-π/4)②sin13/6π③cos5/4π④tan(-7/4π)⑤-cos(-300°)⑥sin495°
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 10:21:13
![①sin(-π/4)②sin13/6π③cos5/4π④tan(-7/4π)⑤-cos(-300°)⑥sin495°](/uploads/image/z/2104104-48-4.jpg?t=%E2%91%A0sin%28-%CF%80%2F4%29%E2%91%A1sin13%2F6%CF%80%E2%91%A2cos5%2F4%CF%80%E2%91%A3tan%28-7%2F4%CF%80%29%E2%91%A4-cos%28-300%C2%B0%29%E2%91%A5sin495%C2%B0)
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①sin(-π/4)②sin13/6π③cos5/4π④tan(-7/4π)⑤-cos(-300°)⑥sin495°
①sin(-π/4)②sin13/6π③cos5/4π④tan(-7/4π)⑤-cos(-300°)⑥sin495°
①sin(-π/4)②sin13/6π③cos5/4π④tan(-7/4π)⑤-cos(-300°)⑥sin495°
①-√2/2②1/2③同① ④1⑤√3/3⑥同①