If: 3x -2y -26 = 0
Then: y = 1.5x -13
If: x^2 +y^2 -6x +4y = 0
Then: x^3 +(1.5x -13)^2 -6x +4(1.5x -13 = 0
Expanding brackets: x^2 +2.25x^2 -39x +169 -6x +6x -52 = 0
Collecting like terms: 3.25x^2 -39x +117 = 0
Divide all terms by 3.25: x^2 -12x +36 = 0
Factorizing: (x-6)(x-6) = 0 => x = 6 and also x = 6
By substitution point of contact is at: (6, -4)
If you mean: 2x^2 +2y^2 -8x -5y -1 = 0 making contact at (1, -1) Then the tangent equation in its general form works out as: 4x+9y+5 = 0
Circle equation: x^2 +y^2 -8x +4y = 30 Tangent line equation: y = x+4 Centre of circle: (4, -2) Slope of radius: -1 Radius equation: y--2 = -1(x-4) => y = -x+2 Note that this proves that tangent of a circle is always at right angles to its radius
pineapple
In trig, the secant squared divided by the tangent equals the hypotenuse squared divided by the product of the opposite and adjacent sides of the triangle.Details: secant = hypotenuse/adjacent (H/A) and tangent = opposite/adjacent (A/O);Then secant2/tangent = (H2/A2)/(O/A) = H2/A2 x A/O = H2/AO.
Equation: x² + y² -6x +4y = 0 Completing the squares: (x-3)² + (y+2)² = 13 Centre of circle: (3, -2) Contact point: (6, -4) Slope of radius: -2/3 Slope of tangent: 3/2 Tangent equation: y - -4 = 3/2(x-6) => 2y - -8 = 3x-18 => 2y = 3x-26 Tangent line equation in its general form: 3x-2y-26 = 0
If you mean: 2x^2 +2y^2 -8x -5y -1 = 0 making contact at (1, -1) Then the tangent equation in its general form works out as: 4x+9y+5 = 0
Equation of circle: x^2 +y^2 -8x -y +5 = 0Completing the squares: (x-4)^2 +(y-0.5)^2 = 11.25Centre of circle: (4, 0.5)Slope of radius: -1/2Slope of tangent: 2Equation of tangent: y-2 = 2(x-1) => y = 2xNote that the above proves the tangent of a circle is always at right angles to its radius
-2
Circle equation: x^2 +y^2 -8x +4y = 30 Tangent line equation: y = x+4 Centre of circle: (4, -2) Slope of radius: -1 Radius equation: y--2 = -1(x-4) => y = -x+2 Note that this proves that tangent of a circle is always at right angles to its radius
pineapple
First find the slope of the circle's radius as follows:- Equation of circle: x^2 +10x +y^2 -2y -39 = 0 Completing the squares: (x+5)^2 + (y-1)^2 -25 -1 -39 = 0 So: (x+5)^2 +(y-1)^2 = 65 Centre of circle: (-5, 1) and point of contact (3, 2) Slope of radius: (1-2)/(-5-3) = 1/8 which is perpendicular to the tangent line Slope of tangent line: -8 Tangent equation: y-2 = -8(x-3) => y = -8x+26 Tangent equation in its general form: 8x+y-26 = 0
In trig, the secant squared divided by the tangent equals the hypotenuse squared divided by the product of the opposite and adjacent sides of the triangle.Details: secant = hypotenuse/adjacent (H/A) and tangent = opposite/adjacent (A/O);Then secant2/tangent = (H2/A2)/(O/A) = H2/A2 x A/O = H2/AO.
Equation: x² + y² -6x +4y = 0 Completing the squares: (x-3)² + (y+2)² = 13 Centre of circle: (3, -2) Contact point: (6, -4) Slope of radius: -2/3 Slope of tangent: 3/2 Tangent equation: y - -4 = 3/2(x-6) => 2y - -8 = 3x-18 => 2y = 3x-26 Tangent line equation in its general form: 3x-2y-26 = 0
It is (-0.3, 0.1)
If: y -3x -5 = 0 Then: y = 3x+5 If: x^2 +y^2 -2x +4x -5 = 0 Then: x^2 +(3x+5)^2 -2x+4(3x+5)-5 = 0 Removing brackets: x^2 +9x^2 +30x +25 -2x +12x +20 -5 = 0 Collecting like terms: 10x^2 +40x +40 = 0 Divide all terms by 10: x^2 +4x +4 = 0 Factorizing: (x+2)(x+2) = 0 => x = -2 and also x = -2 Therefore by substitution the tangent line makes contact with the circle at (-2, -1) on the Cartesian plane.
If: x -2y +12 = 0 Then: x = 2y -12 If: x^2 +y^2 -x -31 = 0 Then: (2y -12)^2 +y^2 -(2y -12) -31 = 0 So: 4y^2 -48y +144 +y^2 -2y +12 -31 = 0 Collecting like terms: 5y^2 -50y +125 = 0 Using the quadratic equation formula: y = 5 and y also = 5 By substituting: x = -2 and y = 5 Therefore the tangent line makes contact with the circle at (-2, 5) on the Cartesian plane.
Circle equation: 2x^2 +2y^2 -8x -5y -1 = 0 Divide all terms by 2: x^2 +y^2 -4x -2.5y -0.5 = 0 Complete the squares: (x-2)^2 +(y-1.25)^2 -4 -1.5625 -1 = 0 So: (x-2)^2 +(y-1.25)^2 = 6.0625 Centre of circle: (2, 1.25) Contact point: (1, -1) Slope of radius: (-1-1.25)/(1-2) = 9/4 Slope of tangent line: -4/9 Tangent equation: y- -1 = -4/9(x-1) => 9y--9 = -4x+4 => 9y = -4x-5 Tangent equation in its general form: 4x+9y+5 = 0