A) \[{{x}^{2}}+{{y}^{2}}={{a}^{2}}\]
B) \[x{{x}_{1}}+y{{y}_{1}}={{a}^{2}}\]
C) \[xy=0\]
D) \[x+y=0\]
Correct Answer: B
Solution :
The focus of the tangent from a point A). Let having co-ordinates\[({{x}_{1}},\,\,{{y}_{1}})\] is equation of the tangent, which is\[x{{x}_{1}}+y{{y}_{1}}={{a}^{2}}\]You need to login to perform this action.
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