A) \[{{x}^{2}}+{{y}^{2}}=1\]
B) \[{{x}^{2}}+{{y}^{2}}=2\]
C) \[x+y=1\]
D) \[x+y=2\]
Correct Answer: B
Solution :
Let mid point of the chord AB is \[C({{x}_{1}},{{y}_{1}})\] In \[\Delta COB,\sin \frac{\pi }{4}=\frac{BC}{OB}\]You need to login to perform this action.
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