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Let (x 1 , y 1 ) be the middle point of chord of circle x 2 +y 2 =a 2 Then equation of chord can be written as xx 1 +yy 1 =x 1 2 +y 1 2 Since chord passes through (h,k) we have hx 1 +ky 1 =x 1 2 +y 1 ...
find the perpendicular distance from cenetr of circle to the given tangent. m = |x1 + 2y1 – 1|/|root(x1^2 + y1^2)| and equate it to root((x1-3)^2 + (y1+1)^2) = m {from distance formulae} where x1 and ...
U can divide the whole eqn. 2a + b + 2c by 2 also. we get, a + b/2 + c = 0 now compare it with ax+by+c=0 and we get x = 1 b =0.5 hence.
Make ax+by+c=0 similar to 2a + b + 2c = 0 therfore multiply ax+by+c=0 by 2 .i.e. 2ax + 2by + 2c = 0 Now compare it with the coeff. of 2a+b+2c=0 we get, x = 1 y = ½ thus at this point it is concurrent.
Let the equation of the circle having center in the first quadrant, be x^2 + y^2 + 2gx + 2fy + c = 0......................(1) touching the x – axis, .i.e y = 0 put it in eqn. (1), and and apply the...
Find the reflection of point (1,2) w.r.t y-axis. By simple geometry you will find that point of reflection of (1,2) i.e. (-1,2) , point A and (5,3) are collinear. So you can easily find the...
Step 1 : General Equation of circle is given by – x^2 + y^2 + 2gx + 2fy + c = 0 whose Centre = (-g, -f) and Radius^2 = g^2 + f^2 + c Step 2: given Centre = -3, 1 therefroe g = 3 and f = -1. Now...
Dear Student, Here you can write, B + 2C + 3A = pi + C + 2A = K(let), so cos(K) = -cos(2A+C), Therefore, now given equation becomes, cos(A-B) – cos (2A+C) now from here you can simplify using...
Point A(2, 0) does not lie on line L2 but still question be solved as follows Let Point A be any point on line L1 and B and C are points on L2 The distance between L1 and L2 is given by...
You no longer have to wait desperately for someone to help resolve your doubt. You can chat with IITians live, 24/7 (even at 3AM!) and get your doubt resolved instantly. Try the HashLearn Now app! I...
all the months except february have same calendar as it has 29 days in that month. so your answer include list of names of all months except february. thanks and approve post if any doubt regarding...
Your answer is 12. I will post full answer tommorow, I feel sleepy today by the way brilliant question.
kindly , Upload the image as well. I think the student forget to upload the image.
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