tan35π12
tan35π12
化简tan25度加tan35度加根号3tan25度tan35度,
求tan25+tan35+根号3tan25tan50的值
cos*π/12—sin*π/12
cos5π/12=sinπ/12
计算cosπ/12*sinπ/12
求值:sin(π/12)+cos(π/12)
tanπ/12-cotπ/12
(cosπ/12-sinπ/12)*(COSπ/12+sinπ/12)等于
(sin5π12−sinπ12)(sin5π12+sinπ12)
(sin5π/12+cos5π/12)(sinπ/12-cosπ/12)
(sin5π/12-sinπ/12)(cos5π/12+cosπ/12)=?