英文数学题 求答案及过程 急! 谢谢A semicircle with centre O (the origin) and radius 5 units, meets Ox at A and B and the positive y-axirs at C. 1. State the coordinates of A,B and C. 2. If a point (x,y) lies one the sencircle, show t

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 22:11:52
英文数学题 求答案及过程 急! 谢谢A semicircle with centre O (the origin) and radius 5 units, meets Ox at A and B and the positive y-axirs at C. 1. State the coordinates of A,B and C. 2. If a point (x,y) lies one the sencircle, show t

英文数学题 求答案及过程 急! 谢谢A semicircle with centre O (the origin) and radius 5 units, meets Ox at A and B and the positive y-axirs at C. 1. State the coordinates of A,B and C. 2. If a point (x,y) lies one the sencircle, show t
英文数学题 求答案及过程 急! 谢谢
A semicircle with centre O (the origin) and radius 5 units, meets Ox at A and B and the positive y-axirs at C.
1. State the coordinates of A,B and C.
2. If a point (x,y) lies one the sencircle, show that x的平方+y的平方=25.
3. Verify that the point p(-3,4) lies on the semicircle and show by using gradients that 角APB=90度.

英文数学题 求答案及过程 急! 谢谢A semicircle with centre O (the origin) and radius 5 units, meets Ox at A and B and the positive y-axirs at C. 1. State the coordinates of A,B and C. 2. If a point (x,y) lies one the sencircle, show t

以O为圆心,5为半径的半圆,与x轴相交于A、B两点,与y轴的正半轴相交于C点.

1.标出A、B、C的坐标.

2.如果有一个点(x,y)位于半圆上,证明x的平方+y的平方=25.

3、用∠APB=90度,验证p(-3,4)位于半圆上.

答案:1.如图

2.略

3.由∠APB=90度,-3的平方+4的平方=25.所以p(-3,4)位于半圆上.

有这时间,你找本英语词典都翻译出来了