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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...

4 years ago

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12

4 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


4 years ago

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How to find root of 8+3i in complex numbers???????????????????????
 
 
Let x+iy=root of 8+3i (x+iy) 2 =8+3i x 2 -y 2 +2xyi=8+3i On comparing, x2-y2=8 and 2xy=3 ie x=3/(2y) 9/(4y 2 ) – y 2 =8 Solve and get the values of x and y z=x+iy
 
Amogh Dasture 3 months ago
Why 2+2 =4????
 
 
Dear Student, This is a basic mathematics that 2 and 2 will be equal to 4. Let suppose you keep two toffee on a table then you keep another 2 toffee on the same table. Now if you start...
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Vijay Mukati 9 months ago
do max and min questions come in IITJEE a 2 +4b 2 =4 find the max value of 3a+2b-2
 
 
hello rahul, in the first given equation a2+4b2=4 put a=0 we get b=1 put b=0 we get a=2 then substitute in the 3a+2b-2 we get 6
 
raj kumar one month ago
 
 
jagdish singh singh one month ago
1+cose=
 
 
1+1/sec =sec+1/sec =tan/sec sec^2-tan^2=1 tan^2=1+sec^2 =sin/cos/sec 1/cos=sec =sin/sec/sec sin.sec/sec=sin
 
SHANMUKESHWAR 8 months ago
 
sorry sine
 
SHANMUKESHWAR 8 months ago
 
1+cose=sec
 
KARTHIK 8 months ago
sin60-cos30
 
 
Value of sin 60=(3^0.5)/2 Value of cos30=(3^0.5)/2 Hence their difference equals 0
 
Rocker 8 months ago
 
Since sin 60=1/root(2) and cos 30=1/root(2) so sin 60-cos 30=0.
 
Nikhil Upadhyay 8 months ago
what occurs twice in a week,once in ayear,but never in a day?
 
 
the letter ‘e’
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Riddhish Bhalodia 3 months ago
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