tan945度是多少cos47派/6=cot(负三分之十七乘以派)=cos(负三分之2005乘以派)=sin(19/6乘以派)=

Question

tan945度是多少
cos47派/6=
cot(负三分之十七乘以派)=
cos(负三分之2005乘以派)=
sin(19/6乘以派)=

Answer 1

tan (945度) = tan (45度) = 1cos (47派/6) = cos (-派/6) = cos (派/6) = 根号3 / 2cot (负三分之十七乘以派) = cot (-17/3 * 派) = cot (1/3 * 派) = 1/tan(派/3) = 根号3 / 3cos(负三分之2005乘以派) = cos(2005...