SOLUTION: equation of tangent to the circle x^2+y^2=a^2 for all values of m at point (x1,y1)is...pleas tell

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Question 839280: equation of tangent to the circle x^2+y^2=a^2 for all values of m at point (x1,y1)is...pleas tell
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

equation of tangent to the circle x^2+y^2=a^2 for all values of m at point (x1,y1)

x^2+y^2=a^2   |Differentiating

2x+%2B+2y%28dy%2Fdx%29+=+0

 dy%2Fdx+=+highlight%28+-x%2Fy%29  |Slope of tangent Line

Tangent Line at point (x1,y1):

y+-+y%5B1%5D+=+%28-x%5B1%5D%2Fy%5B1%5D%29%28x+-+x%5B1%5D%29