比较tan(-13π/4)与tan(-12π/5)的大小
问题描述:
比较tan(-13π/4)与tan(-12π/5)的大小
答
tan(-13π/4)=tan(-5π/4)=tan(3π/4)
tan(-12π/5)=tan(-2π/5)=-tan(2π/5)=tan(3π/5)
3π/5tan(3π/4
tan(-13π/4)