posted by BARBIE LEE

The diagram shows tangent circles and lines. if AB=15 CM find AC, AD and AE .

Help me reiny and other tutors please<3 thank you

this is the figure img19.(imageshack.)us/img19/7143/0eua.png

just remove the open and close parentheses thank you

1. Reiny

This is just too easy.

Remember that both tangents to the same circle from an exterior point are equal.
so AB = AC
but AC is also tangent to the small circle
but AD is also a tangent to the circle at the right

Since the are all equal , and AB = 15
each one of them is 15

## Similar Questions

1. ### Algebra 2

Make a table with a process column to represent each pattern. Write an expression for the number of circles in the Nth figure. The first figure is 5 circles long and 2 circles wide, the second 5 circles long and 3 circles wide. How …

PLEASE HELP I REALLY NEED HELP. Each of the three circles in the figure below is externally tangent to the other two, and each side of the triangle is tangent to two of the circles. If each circle has radius three, then find the perimeter …
3. ### Geometry - Circles and tangents

Two circles of radius 1 are externally tangent at Q . Let PQ and QR be diameters of the two circles. From P a tangent is drawn to the circle with diameter QR , and from R a parallel tangent is drawn to the circle with diameter PQ . …
4. ### Maths

the figure below shows 3 similar circles that just touch one another.A,Band C are the centres of the circles.If the perimeter of the triangle ABC is 42cm, what is the total area of the unshaded part of the 3 circles. (take pie = 22/7)
5. ### Math

With figure, img19.imageshack.us/img19/2135/81gd.png prove: tan(x/2) = sin(x)/(1+cos(x)).
6. ### Geometry/Trigonometry

Circles with centers (2,1) and (8,9) have radii 1 and 9, respectively. The equation of a common external tangent to the circles can be written in the form y=mx+b with m < 0. What is b?