的相反数是( )
If the ratio of the degree of exterior angle of ∠A,∠B and ∠Cthat are in the triangle ABC is 5:4:3,then the ratio of the degree of ∠A,∠B and ∠C is ( )A、5:4:3 B、3:4:5 C、1:2:3 D3:2:1
对有理数a,b,有以下四个判断:①若|a|=b,则a=b; ②若|a|>b,则|a|>|b|;③若,则;④若|a|<|b|,则a<b;其中正确的判断的个数是( )
两个直角三角形如图放置,则∠BFE与∠CAF的度数之比等于( )
若a的负倒数的相反数是8,b的相反数的负倒数也是8,则( )
设,则的整数部分等于( ).