题目

阅读理解 Many facts suggest that children areoverweight and the situation is getting worse, according to the doctors. I feelthere are a number of reasons for this. Somepeople blame the fact that we are surrounded by shops selling unhealthy, fattyfoods, such as fried chicken and ice cream, at low prices. This has turned outa whole generation of grown-ups who seldom cook a meal for themselves. If therewere fewer of these restaurants, then probably children would buy lesstake-away food. There isanother argument that blames parents for allowing their children to becomeoverweight. I agree with 已知：∠A为锐角，sinA=，则tanA=    ．