已知sina+cos=5分之根号下10.求(1)1/sinA +1/cosA的值(2)tanA的值?已知sina+cos=5分之根号下10.求(1)1/sinA +1/cosA的值(2)tanA的值
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![已知sina+cos=5分之根号下10.求(1)1/sinA +1/cosA的值(2)tanA的值?已知sina+cos=5分之根号下10.求(1)1/sinA +1/cosA的值(2)tanA的值](/uploads/image/z/981665-17-5.jpg?t=%E5%B7%B2%E7%9F%A5sina%2Bcos%3D5%E5%88%86%E4%B9%8B%E6%A0%B9%E5%8F%B7%E4%B8%8B10.%E6%B1%82%281%291%2FsinA+%2B1%2FcosA%E7%9A%84%E5%80%BC%282%29tanA%E7%9A%84%E5%80%BC%3F%E5%B7%B2%E7%9F%A5sina%2Bcos%3D5%E5%88%86%E4%B9%8B%E6%A0%B9%E5%8F%B7%E4%B8%8B10.%E6%B1%82%281%291%2FsinA+%2B1%2FcosA%E7%9A%84%E5%80%BC%282%29tanA%E7%9A%84%E5%80%BC)
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