根据正弦和余弦，然后查表。比如斜边长就是3 / sin76.5 = 3 / 0.972 = 3.09 (m)另一条直角边长为3.09 * sin13.5 = 0.72 (m)谢谢采纳 ^_^
斜边长就是3 / sin76.5 = 3 / 0.972 = 3.09 (m)另一条直角边长为3.09 * sin13.5 = 0.72 (m)
