Best Answer

Equation of circle: x^2 +y^2 -8x -16y -209 = 0

Completing the squares: (x-4)^2 +(y-8)^2 = 289

Radius of circle: 17

Center of circle: (4, 8)

Point of contact: (21, 8)

Slope of radius: 0

Slope of tangent line: 0

Equation of tangent line: x = 21 which means it touches the circle at (21, 0) which is a straight vertical line parallel to the y axis

Study guides

☆☆

Q: What is the tangent line equation of the circle x2 plus y2 -8x -16y -209 equals 0 when it touches the circle at 21 8 on the Cartesian plane?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

A tangent of a circle is a straight line that touches the circle at only one point.

Tangent

a tangent is a line that touches the circle at only ONE point

A tangent to a circle is a line from a point outside the circles which touches the circle at a single point.

A tangent of a circle is a straight line that touches the circle's circumference at just one point.

Related questions

A tangent of a circle is a straight line that touches the circle at only one point.

Tangent

A tangent is a straight line that touches a circle's circumference at one point

a tangent is a line that touches the circle at only ONE point

Centre of the circle is at (7, 7) and its Cartesian equation is (x-7)^2 + (y-7)^2 = 49

It is a straight line that touches the circle.

It is the tangent of the circle

A tangent to a circle is a line from a point outside the circles which touches the circle at a single point.

A tangent of a circle is a straight line that touches the circle's circumference at just one point.

A straight line touching a circle is called a tangent. The following is the image of a tangent to a circle with center C and radius AC. The tangent touches the circle at only one point - A. visit our page: balajidentalhospital .com

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

the answer is a Tangent.

People also asked