如何求直线与平面所成的角

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select * from tbl_Articles WHERE ArticleID=1578350 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1578350 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1578350 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1058415,1066888,1071972,1062094,1044426,1051239,1060391,1097771,1099819,1051917,1105543,1093479,1082310,1081422,1086434,1093140,1064249,1085904,1132649,1068118,1106647,1103680,1065333,1073568,1100849,1109671,1100639,1093923,1129029,1069793) ORDER BY field (ArticleID,1058415,1066888,1071972,1062094,1044426,1051239,1060391,1097771,1099819,1051917,1105543,1093479,1082310,1081422,1086434,1093140,1064249,1085904,1132649,1068118,1106647,1103680,1065333,1073568,1100849,1109671,1100639,1093923,1129029,1069793)