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If the chord y=m x+1 of the circles x^2+...

If the chord `y=m x+1` of the circles `x^2+y^2=1` subtends an angle of `45^0` at the major segment of the circle, then the value of `m` is `2` (b) `-2` (c) `-1` (d) none of these

A

`1 pm sqrt(2)`

B

`-2 pm sqrt(2)`

C

`-1pm sqrt(2)`

D

` pm 1`

Text Solution

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The correct Answer is:
D
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