co ordinate geometry
Geometry
Level
pending
The straight line ax + by=1 intersects the circle x^2+y^2=c^2 at P and Q ; if the chord PQ subtends an angle 45° at the centre of the circle ; find the value of c^2(a^2+ b^2).
31(6-√8)
6
2(2-√2)
12(1-√2)
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1 solution
SUHAG SHORT TRICK LET C=2, SO WE WILL GET a=1/2 and b= (2^(1/2)-1)/2 just check you will get option c