a=sin5π⼀7,b=cos5π⼀7,c=tan5π⼀7

abc那个最大,那个最小?
2024-12-01 02:54:01
推荐回答(1个)
回答(1):

a=sin5π/7=sin2π/7>0
b=cos5π/7=-cos2π/7>-1
c=tan5π/7=-tan2π/7<-1
sin5π/7>cos5π/7>tan5π/7