Let x^2+y^2-x+2y=11/4 is a circle with R...

Let `x^2+y^2-x+2y=11/4` is a circle with RQ and centre C. If P is any point on its circumference such that `angleQCP=45^@` , then value of area of `triangle PQR` is

`2cos(pi/8)`

`2sqrt2`

`(sin (pi/8))`

`3sin(3pi/8)`

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