【90°】
设这个角为角A,其补角为B,余角为角C
则角A+B=180°
角A+C=90°
整理可以得到
角B-角C=90°
所以个角的补角比它的余角大90度
猜你喜欢
- 1多项式-axy2-1/2x与1/4x-bxy2的和是一个单项式,则a,b的关系是_.
- 2求由曲线y=x平方与y=x所围的成图形的面积
- 3May is an o( ) girl.she likes playing basketball and making friends
- 4一个多项式减去3X平方-5X+1等于3X+1,则这个多项式等于多少
- 5look at that man.he is_______(boat)on the river.
- 6设A是实数,函数f(x)=a-(2除以(2的x次方后再+1))(x属于R),试确定a的值,使f(x)为奇函数
- 7英语Could you tell me k() to the question?-No problem.
- 8求证:不论a,b取任何实数,多项式a*b*+b*-6ab-4b+14的值都不小于1
- 9The teacher came in,( ) a lot of students (follow)
- 10光明小学有女生560人,比男生多25分之3,男生多少人?