我好困惑 数学高手进啊
来源:百度知道 编辑:UC知道 时间:2024/05/04 12:15:00
http://s21.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6b0376ef81472958562568ea31191be1304abf7ff443e6b8bdcc23ba49af51e0617402515532fee9d3684ed66fe8faf735b5655efbb3375144fd4805f32d02a449061cce6ae9403a18667652ada69cfae33fc5c1
http://b21.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6b0376ef81472958562568ea31191be121f59d98ccbec77bd904bc2982f13ec54f34ff9968901b0a5a5291f3d670edf05b1be8ec271166c252eb905fd1b23c4de860227ff57f1a1e61667c0a03
http://b21.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6b0376ef81472958562568ea31191be121f59d98ccbec77bd904bc2982f13ec54f34ff9968901b0a5a5291f3d670edf05b1be8ec271166c252eb905fd1b23c4de860227ff57f1a1e61667c0a03
那你实在不会,用反正弦,正弦不用管他是锐角还是钝角,反正都是正的嘛,再说答案又没说不让用反正弦
就这么简单
看不 到你 的图啊
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