来自鲁铁华的问题
(tan5°-cot5°)×cos70°1+sin70°=______.
(tan5°-cot5°)×cos70°1+sin70°=______.
1回答
2020-01-29 13:09
(tan5°-cot5°)×cos70°1+sin70°=______.
(tan5°-cot5°)×cos70°1+sin70°=______.
(tan5°-cot5°)×cos70°1+sin70°