数学题What is they-intercept of the line tangent to the circle

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/11 08:17:00

数学题What is they-intercept of the line tangent to the circle x²+y
这是网友给的答案和解题的图片.求问切线AB的斜率怎么算?数字是怎么出来的?

过圆X²+ Y²= 1的切点P（3／5,4 / 5）的切线AB在Y轴上的截距为OB,求OB,
法线OP的斜率k=（4/5）/（3/5）=4/3,切线AB的斜率k1=－1/（4/3）=－3/4,
AB的切线方程,按点斜式有：y－4/5=（－3/4）（x－3/5）=（－3/4）x+9/20
y=（－3/4）x+5/4,x=0时,y=5/4,
切线AB在Y轴上的截距为5/4.

完整题目What is they-intercept of the line tangent to the circle x²+y²=1 at the point (3/5,4/5)?

就是那样算没错相互垂直的两条直线斜率相乘的值为-1 知道这个了再求出OP斜率自然知道AB斜率

数学题What is they-intercept of the line tangent to the circle write the equation of the tangent line to f(x)=x+x×x that is tangent line For what values of a and b is the line 4x+y=b t 英语翻译write the slope-intercept equation of the line parallel Find an equation of the tangent line to the graph of the fun Find the equation of line tangent to the graph of f(x)=e+ln Find an equation of the line tangent to the graph of 4/x^4 a Find an equation of the tangent line to the curve at the giv find the slop of tangent line to the curve r=2+4sin For what value of A is the plane 2x-2y+z=3 is tangent to the A line has slope=-2/3 and y-intercept=120.What is the x-inte what is y-intercept of the graph of 3x+4y=24什么意思