高考资源网() 您身边的高考专家1若tan3,tan,则tan()等于()A. BC3 D3解析tan().答案A2已知,sin,则tan()A. B7C D7解析sincostan.tan.答案A3._.解析tan60.答案4tan19tan26tan19tan26_.解析tan45tan(1926)1.所以tan19tan261tan19tan26,则tan19tan26tan19tan261tan19tan26tan19tan261.答案15若3,tan()2,则tan(2)_.解析3,tan2.又tan()2,tan(2)tan()tan().答案高考资源网版权所有,侵权必究!