Circle And System Of Circles Question 42
Question: The slope of the tangent at the point $ (h,h) $ of the circle $ x^{2}+y^{2}=a^{2} $ is
Options:
A) -1
B) 1
C) 0
D) Depends on h
Show Answer
Answer:
Correct Answer: A
Solution:
The tangent drawn at point $ P(x,\ y) $ on the circle $ x^{2}+y^{2}=a^{2} $ is perpendicular to the line that joins the origin with point P. So required curve will be circle.
BETA
