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let x2 +y2 -4x-2y-11=0 be a circle.a pair of tangents from the points (4,5) with a pair of radii form a quadrilateral of area...

3 years ago

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12

3 years ago
                                        

  • means its centre at2,1 and radii 4.it is at adis.from 2 so area of one triangle from quadilateral is 8.so another is also a right angled triangle  so its area 4. so total area 12


3 years ago

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which term of the G.P. 2,1,1/2,1/4... is 1/128?
 
 
You can do this simply by putting 1/128 as an exponential term in terms of (1/2) which is the common ratio. The first terrm is a=2, d=1/2, so you can either equate them directly equal to the...
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