0
In circle A below the radius is 3 and BC is tangent to the circle. Find BC?
Wiki User
∙ 6y ago
Not enough information has been given to find the tangent BC but it will be perpendicular or at right angles to the radius of the circle.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
A circle has a radius of 12 in Find the diameter of the circle?
diameter is 2 times the radius 24
What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
Formula for the radius of a circle?
Well to find the radius it is diameter/2.
How do you find the radious of a circle?
The radius of a circle is any straight line from the centre of the circle to its circumference. The radius can also refer to the length of this line.
How do i find circumference and area of a circle?
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared
How do you find the tangent of a circle?
a tangent is a line that touches the circle at only ONE point
How do you find the normal and tangent of a circle?
The link below gives the equations for the line that tangent. Once you have that, finding the normal should be straightforward.http://mathworld.wolfram.com/CircleTangentLine.html
Does a trigonometry tangent relate to a circle's tangent?
A circle's tangent is exactly the same as a triangle's tangent. If you look at a circle, you can make the radius the hypotenuse. Then make a vertical line from the point, and a horizontal line from the center. If you look, you have a triangle made inside the circle. This is why angles can be measured in radians, a unit that is derived from the circumference of a circle.-------------------------------------------------------------------------------------------By doing a little calculus, we find that the slope of the equation of a circle-the slope of the tangent line-is given by the tangent of an angle.AnswerEverything written above is correct, but doesn't have anything to do with tangents (in the circle sense of the word). Suppose you're given an angle theta. Draw a circle together with two radii, one horizontal and the other at an angle theta from the first one. (So far, this is the same as above.) Now draw the tangent to the circle at X, the point where the non-horizontal radius meets the circumference. Let Y be the point where this tangent meets the horizontal line through the centre. Then, assuming the radius is 1, tan(theta) is the distance XY, which is the length of part of the tangent.
How do you find the length of a radius drawn from the center of the circle to a tangent?
It is the same length from the centre to any point on the circumference so just measure it
How do you find the radius of a circle with the circumference in terms of pi?
find the radius of a circle with circumference of 42.1
How do you find the radius of the base in a cylinder?
It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.
How do you find the director circle of circle?
The director circle of a circle with radius r is a concentric circle with radius r*sqrt(2).
How do you find the radius of a circle if you know the radius?
You already know the radius.
What is the length of the tangent line from the origin when it meets the circle of x2 plus y2 plus 4x -6y plus 10 equals 0?
A circle with centre (X, Y) and radius r has an equation of the form: (x - X)² + (y - Y)² = r² Completing the square in x and y for the given equation gives: x² + y² + 4x - 6y + 10 = 0 → (x + (4/2))² - (4/2)² + (y - 6/2) - (6/2)² + 10 = 0 → (x + 2)² +(y - 3)² -2² - 3² + 10 = 0 → (x - -2)² + (y - 3)² = 4 + 9 - 10 = 3 → centre of circle is (-2, 3) and radius is √3 Where a tangent meets a circle it forms a right angle with a radius of the circle. Thus the origin, point of contact of tangent and centre of the circle form a right angled triangle with the hypotenuse the side between the origin and the centre of the circle. Thus Pythagoras can be used to find the length of the hypotenuse and the tangent: tangent² + radius² = hypotenuse² → tangent = √(hypotenuse² - radius²) = √((-2 - 0)² + (3 - 0)² - 3) = √((-2)² + (3)² - 3) = √(4 + 9 - 3) = √10 units ≈ 3.16 units
How do you find distance if radius is given?
Diameter of a circle = 2*radius Circumference of a circle = 2*radius*pi
How do you find what a diameter of a circle is?
It is twice the radius of a circle
How do you find out the radius of a circle?
The radius of a circle is half its diameter (the measure of the circle from one side across to the other).
