sin(-34π/3)+cos29π/6+tan(-25π/4)
问题描述:
sin(-34π/3)+cos29π/6+tan(-25π/4)
答
sin(-34π/3)+cos29π/6+tan(-25π/4)
=sin(-12π+2π/3)+cos(5π-π/6)+tan(-6π-π/4)
=sin(2π/3)-cosπ/6-tanπ/4
=根号3/2-根号3/2-1
=-1