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
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![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](/uploads/image/z/1144256-32-6.jpg?t=%E8%8B%B1%E6%96%87%E6%95%B0%E5%AD%A6%E9%A2%98+%E6%B1%82%E7%AD%94%E6%A1%88%E5%8F%8A%E8%BF%87%E7%A8%8B+%E6%80%A5%21+%E8%B0%A2%E8%B0%A2A+semicircle+with+centre+O+%EF%BC%88the+origin%29+and+radius+5+units%2C+meets+Ox+at+A+and+B+and+the+positive+y-axirs+at+C.+1.+State+the+coordinates+of+A%2CB+and+C.+2.+If+a+point+%EF%BC%88x%2Cy%29+lies+one+the+sencircle%2C+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