Need help with chord length.
I cannot for the life of me figure out a homework problem. My teacher is notorius for assigning stuff we haven't completely learned.
Need to know: Length of segment AB
Each circle has a radius of 10cm. The centers all lie on line OE. Line OD intersects the middle circle and is tangent to the last circle.
I'm in trig, but I don't know if that's this problem. We haven't learned chords, secants or tangent lines but I know general info.
What I have figured out:
I drew a line done from the tangent point, I'm assuming that the angle off OE is the right triangle. The line down from point D is 10cm. Line OE is 50cm to the middle of the last circle. Angle O is arctan (10/50). I have no idea how any of this helps me though.
Thanks for sticking with it this far! :-)