sin²A+sinAcosA/sin²A+cos²A的化简sin²A+sinAcosA/sin²A+cos²A结果是tan²A+tanA/tan²A+1我想问下是怎么化简到那一步的,
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sin²A+sinAcosA/sin²A+cos²A的化简sin²A+sinAcosA/sin²A+cos²A结果是tan²A+t
sin²A+sinAcosA/sin²A+cos²A的化简sin²A+sinAcosA/sin²A+cos²A结果是tan²A+tanA/tan²A+1我想问下是怎么化简到那一步的,
sin²A+sinAcosA/sin²A+cos²A的化简
sin²A+sinAcosA/sin²A+cos²A结果是tan²A+tanA/tan²A+1我想问下是怎么化简到那一步的,
sin²A+sinAcosA/sin²A+cos²A的化简sin²A+sinAcosA/sin²A+cos²A结果是tan²A+tanA/tan²A+1我想问下是怎么化简到那一步的,
(sin²A+sinAcosA)/(sin²A+cos²A) (分子分母同除以cos²A)
=(tan²A+tanA)/(tan²A+1)