cos33度cos27度－cos57度sin27度_数学解答

cos33度cos27度－cos57度sin27度

人气：247 ℃　时间：2020-09-04 04:29:34

解答

cos(33) = -0.0132767472231
cos(27) = -0.29213880873384
-cos(57) = -0.89986682696919
sin(27) = 0.9563759284045