tanα=1/3 求(4sin²α-3sinα×cosα+2cosa²α)/(4sin²α-5sinα×cosα+3cosa²α) 这个是接着上面的
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![tanα=1/3 求(4sin²α-3sinα×cosα+2cosa²α)/(4sin²α-5sinα×cosα+3cosa²α) 这个是接着上面的](/uploads/image/z/7176447-63-7.jpg?t=tan%CE%B1%3D1%2F3+%E6%B1%82%EF%BC%884sin%26%23178%3B%CE%B1-3sin%CE%B1%C3%97cos%CE%B1%2B2cosa%26%23178%3B%CE%B1%EF%BC%89%2F%EF%BC%884sin%26%23178%3B%CE%B1-5sin%CE%B1%C3%97cos%CE%B1%2B3cosa%26%23178%3B%CE%B1%EF%BC%89+%E8%BF%99%E4%B8%AA%E6%98%AF%E6%8E%A5%E7%9D%80%E4%B8%8A%E9%9D%A2%E7%9A%84)
tanα=1/3 求(4sin²α-3sinα×cosα+2cosa²α)/(4sin²α-5sinα×cosα+3cosa²α) 这个是接着上面的
tanα=1/3 求(4sin²α-3sinα×cosα+2cosa²α)/
(4sin²α-5sinα×cosα+3cosa²α) 这个是接着上面的
tanα=1/3 求(4sin²α-3sinα×cosα+2cosa²α)/(4sin²α-5sinα×cosα+3cosa²α) 这个是接着上面的