来自苏深伟的问题
化简【2sin50°+sin80°(1+√3tan10°)】/cos5°
化简【2sin50°+sin80°(1+√3tan10°)】/cos5°
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2020-08-04 10:21
化简【2sin50°+sin80°(1+√3tan10°)】/cos5°
化简【2sin50°+sin80°(1+√3tan10°)】/cos5°
[2sin50°+sin80°(1+√3tan10°)]/cos5°=[2sin50°+cos10°(cos10°+√3sin10°)/cos10°]/cos5°=[2sin50°+2(1/2*cos10°+√3/2*sin10°)]/cos5°=[2sin50°+2(cos60°*cos10°+sin60°*sin10°)]/cos5°=[2si...